# What is CVE-2020-28400?

> CVE-2020-28400 is a high-severity flaw (CVSS 7.5) in Dk Standard Ethernet Controller Evaluation Kit Firmware from Siemens, published on 13 July 2021. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 1.9%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2020-28400

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 48 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** High (CVSS 7.5 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 1.9% (latest exploit-likelihood forecast)
- **Published:** 13 July 2021
- **Record last updated:** 10 December 2024
- **Main product:** Dk Standard Ethernet Controller Evaluation Kit Firmware from Siemens
- **Affected products:** 157

## What is CVE-2020-28400? In plain terms

It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can take it offline.

### The official description

Affected devices contain a vulnerability that allows an unauthenticated attacker to trigger a denial of service condition. The vulnerability can be triggered if a large amount of DCP reset packets are sent to the device.

### What kind of flaw is it?

- CWE-770: Allocation of Resources Without Limits or Throttling

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Easy: no special conditions
- Login needed first: No login needed
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can take it offline

Severity vector: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

## Is CVE-2020-28400 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 1.9%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 1.9%, 1.9%, 1.9%, 1.9%, 1.9%, 1.9%, 1.9%.

### Timeline

- 13 July 2021: Published
- 10 December 2024: Record last updated

### How Precursor Intelligence ranks it

CVE-2020-28400 scores **48 out of 100 (Medium)**, with the action "Plan remediation".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2020-28400?

The published record lists 157 products. Versions are as published: "before 4.7" means every version up to, but not including, 4.7.

- [Dk Standard Ethernet Controller Evaluation Kit Firmware](https://www.precursorintelligence.com/product/siemens/dk_standard_ethernet_controller_evaluation_kit_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Dk Standard Ethernet Controller Evaluation Kit](https://www.precursorintelligence.com/product/siemens/dk_standard_ethernet_controller_evaluation_kit) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Ek-Ertec 200 Evaulation Kit](https://www.precursorintelligence.com/product/siemens/ek-ertec_200_evaulation_kit) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Ek-Ertec 200 Evaulation Kit Firmware](https://www.precursorintelligence.com/product/siemens/ek-ertec_200_evaulation_kit_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Ek-Ertec 200p Evaluation Kit](https://www.precursorintelligence.com/product/siemens/ek-ertec_200p_evaluation_kit) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Ek-Ertec 200p Evaluation Kit Firmware](https://www.precursorintelligence.com/product/siemens/ek-ertec_200p_evaluation_kit_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 4.7
- [Ruggedcom Rm1224](https://www.precursorintelligence.com/product/siemens/ruggedcom_rm1224) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Ruggedcom Rm1224 Firmware](https://www.precursorintelligence.com/product/siemens/ruggedcom_rm1224_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 6.4
- [Scalance M-800](https://www.precursorintelligence.com/product/siemens/scalance_m-800) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance M-800 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_m-800_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 6.4
- [Scalance S615](https://www.precursorintelligence.com/product/siemens/scalance_s615) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance S615 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_s615_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 6.4
- [Scalance W1700](https://www.precursorintelligence.com/product/siemens/scalance_w1700) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance W1700 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_w1700_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance W700](https://www.precursorintelligence.com/product/siemens/scalance_w700) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance W700 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_w700_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X200-4 P Irt](https://www.precursorintelligence.com/product/siemens/scalance_x200-4_p_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X200-4 P Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x200-4_p_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance X201-3p Irt](https://www.precursorintelligence.com/product/siemens/scalance_x201-3p_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X201-3p Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x201-3p_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance X201-3p Irt Pro](https://www.precursorintelligence.com/product/siemens/scalance_x201-3p_irt_pro) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X201-3p Irt Pro Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x201-3p_irt_pro_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance X202-2 Irt](https://www.precursorintelligence.com/product/siemens/scalance_x202-2_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X202-2 Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x202-2_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance X202-2p Irt Pro](https://www.precursorintelligence.com/product/siemens/scalance_x202-2p_irt_pro) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X202-2p Irt Pro Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x202-2p_irt_pro_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance X204 Irt](https://www.precursorintelligence.com/product/siemens/scalance_x204_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X204 Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance X204 Irt Pro](https://www.precursorintelligence.com/product/siemens/scalance_x204_irt_pro) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X204 Irt Pro Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204_irt_pro_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance X204-2](https://www.precursorintelligence.com/product/siemens/scalance_x204-2_) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X204-2 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204-2_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X204-2fm](https://www.precursorintelligence.com/product/siemens/scalance_x204-2fm) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X204-2fm Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204-2fm_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X204-2ld](https://www.precursorintelligence.com/product/siemens/scalance_x204-2ld) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X204-2ld Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204-2ld_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X204-2ld Ts](https://www.precursorintelligence.com/product/siemens/scalance_x204-2ld_ts) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X204-2ld Ts Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204-2ld_ts_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X204-2ts](https://www.precursorintelligence.com/product/siemens/scalance_x204-2ts) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X204-2ts Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204-2ts_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X206-1](https://www.precursorintelligence.com/product/siemens/scalance_x206-1) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X206-1 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x206-1_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X206-1ld](https://www.precursorintelligence.com/product/siemens/scalance_x206-1ld) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X206-1ld Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x206-1ld_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X208](https://www.precursorintelligence.com/product/siemens/scalance_x208) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X208 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x208_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X208pro](https://www.precursorintelligence.com/product/siemens/scalance_x208pro) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X208pro Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x208pro_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X212-2](https://www.precursorintelligence.com/product/siemens/scalance_x212-2) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X212-2 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x212-2_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X212-2ld](https://www.precursorintelligence.com/product/siemens/scalance_x212-2ld) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X212-2ld Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x212-2ld_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X216](https://www.precursorintelligence.com/product/siemens/scalance_x216) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X216 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x216_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X224](https://www.precursorintelligence.com/product/siemens/scalance_x224) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X224 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x224_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance X302-7eec](https://www.precursorintelligence.com/product/siemens/scalance_x302-7eec) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X302-7eec Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x302-7eec_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X304-2fe](https://www.precursorintelligence.com/product/siemens/scalance_x304-2fe) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X304-2fe Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x304-2fe_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X306-1ldfe](https://www.precursorintelligence.com/product/siemens/scalance_x306-1ldfe) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X306-1ldfe Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x306-1ldfe_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X307-2eec](https://www.precursorintelligence.com/product/siemens/scalance_x307-2eec) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X307-2eec Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x307-2eec_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X307-3](https://www.precursorintelligence.com/product/siemens/scalance_x307-3) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X307-3 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x307-3_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X307-3ld](https://www.precursorintelligence.com/product/siemens/scalance_x307-3ld) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X307-3ld Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x307-3ld_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X308-2](https://www.precursorintelligence.com/product/siemens/scalance_x308-2) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X308-2 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x308-2_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X308-2ld](https://www.precursorintelligence.com/product/siemens/scalance_x308-2ld) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X308-2ld Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x308-2ld_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X308-2lh](https://www.precursorintelligence.com/product/siemens/scalance_x308-2lh) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X308-2lh Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x308-2lh_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- Scalance X308-2lh+ by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance X308-2lh+ Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X308-2m](https://www.precursorintelligence.com/product/siemens/scalance_x308-2m) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X308-2m Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x308-2m_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X308-2m Poe](https://www.precursorintelligence.com/product/siemens/scalance_x308-2m_poe) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X308-2m Poe Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x308-2m_poe_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X308-2m Ts](https://www.precursorintelligence.com/product/siemens/scalance_x308-2m_ts) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X308-2m Ts Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x308-2m_ts_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X310](https://www.precursorintelligence.com/product/siemens/scalance_x310) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X310 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x310_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X310fe](https://www.precursorintelligence.com/product/siemens/scalance_x310fe) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X310fe Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x310fe_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X320-1fe](https://www.precursorintelligence.com/product/siemens/scalance_x320-1fe) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X320-1fe Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x320-1fe_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance X320-3ldfe](https://www.precursorintelligence.com/product/siemens/scalance_x320-3ldfe) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance X320-3ldfe Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x320-3ldfe_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance Xb-200](https://www.precursorintelligence.com/product/siemens/scalance_xb-200) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xb-200 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xb-200_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 4.3
- [Scalance Xc-200](https://www.precursorintelligence.com/product/siemens/scalance_xc-200) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xc-200 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xc-200_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 4.3
- [Scalance Xf-200ba](https://www.precursorintelligence.com/product/siemens/scalance_xf-200ba) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf-200ba Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf-200ba_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 4.3
- [Scalance Xf201-3p Irt](https://www.precursorintelligence.com/product/siemens/scalance_xf201-3p_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf201-3p Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf201-3p_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance Xf202-2p Irt](https://www.precursorintelligence.com/product/siemens/scalance_xf202-2p_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf202-2p Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf202-2p_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance Xf204](https://www.precursorintelligence.com/product/siemens/scalance_xf204) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf204 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf204_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance Xf204 Irt](https://www.precursorintelligence.com/product/siemens/scalance_xf204_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf204 Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf204_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance Xf204-2](https://www.precursorintelligence.com/product/siemens/scalance_xf204-2_) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf204-2 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf204-2_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance Xf204-2ba Irt](https://www.precursorintelligence.com/product/siemens/scalance_xf204-2ba_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf204-2ba Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf204-2ba_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.5.0
- [Scalance Xf206-1](https://www.precursorintelligence.com/product/siemens/scalance_xf206-1) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf206-1 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf206-1_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance Xf208](https://www.precursorintelligence.com/product/siemens/scalance_xf208) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xf208 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf208_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.5
- [Scalance Xm400](https://www.precursorintelligence.com/product/siemens/scalance_xm400) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xm400 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xm400_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 6.3.1
- [Scalance Xp-200](https://www.precursorintelligence.com/product/siemens/scalance_xp-200) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xp-200 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xp-200_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 4.3
- [Scalance XR-300wg](https://www.precursorintelligence.com/product/siemens/scalance_xr-300wg) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance XR-300wg Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xr-300wg_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 4.3
- [Scalance Xr324-12m](https://www.precursorintelligence.com/product/siemens/scalance_xr324-12m) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xr324-12m Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xr324-12m_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance Xr324-12m Ts](https://www.precursorintelligence.com/product/siemens/scalance_xr324-12m_ts) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xr324-12m Ts Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xr324-12m_ts_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance Xr324-4m Eec](https://www.precursorintelligence.com/product/siemens/scalance_xr324-4m_eec) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xr324-4m Eec Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xr324-4m_eec_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance Xr324-4m Poe](https://www.precursorintelligence.com/product/siemens/scalance_xr324-4m_poe) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xr324-4m Poe Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xr324-4m_poe_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance Xr324-4m Poe Ts](https://www.precursorintelligence.com/product/siemens/scalance_xr324-4m_poe_ts) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xr324-4m Poe Ts Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xr324-4m_poe_ts_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Scalance Xr500](https://www.precursorintelligence.com/product/siemens/scalance_xr500) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance Xr500 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xr500_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 6.3.1
- [Simatic Cfu Pa](https://www.precursorintelligence.com/product/siemens/simatic_cfu_pa) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Cfu Pa Firmware](https://www.precursorintelligence.com/product/siemens/simatic_cfu_pa_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- Simatic Ie/pb-Link V3 by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Simatic Ie/pb-Link V3 Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Simatic Mv500](https://www.precursorintelligence.com/product/siemens/simatic_mv500) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Mv500 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_mv500_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 3.0
- [Simatic Net Cm 1542-1](https://www.precursorintelligence.com/product/siemens/simatic_net_cm_1542-1) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Net Cm 1542-1 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_net_cm_1542-1_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Simatic Net Cp1604](https://www.precursorintelligence.com/product/siemens/simatic_net_cp1604) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Net Cp1604 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_net_cp1604_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 2.7
- [Simatic Net Cp1616](https://www.precursorintelligence.com/product/siemens/simatic_net_cp1616) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Net Cp1616 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_net_cp1616_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 2.7
- [Simatic Net Cp1626](https://www.precursorintelligence.com/product/siemens/simatic_net_cp1626) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Net Cp1626 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_net_cp1626_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Simatic Net Dk-16xx Pn Io](https://www.precursorintelligence.com/product/siemens/simatic_net_dk-16xx_pn_io) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): up to 2.7
- [Simatic Power Line Booster Plb](https://www.precursorintelligence.com/product/siemens/simatic_power_line_booster_plb) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Power Line Booster Plb Firmware](https://www.precursorintelligence.com/product/siemens/simatic_power_line_booster_plb_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Simatic Profinet Driver](https://www.precursorintelligence.com/product/siemens/simatic_profinet_driver) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic Profinet Driver Firmware](https://www.precursorintelligence.com/product/siemens/simatic_profinet_driver_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 2.3
- [Simatic S7-1200](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simatic S7-1200 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 4.5
- Simocode Prov Ethernet/ip by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Simocode Prov Ethernet/ip Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 1.1.3
- [Simocode Prov Profinet](https://www.precursorintelligence.com/product/siemens/simocode_prov_profinet) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Simocode Prov Profinet Firmware](https://www.precursorintelligence.com/product/siemens/simocode_prov_profinet_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 2.1.3
- [Softnet-Ie Pnio](https://www.precursorintelligence.com/product/siemens/softnet-ie_pnio) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Softnet-Ie Pnio Firmware](https://www.precursorintelligence.com/product/siemens/softnet-ie_pnio_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions

## How do I fix CVE-2020-28400?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-599968.pdf) (Patch, Vendor advisory)
- [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/html/ssa-599968.html)
- [us-cert.cisa.gov](https://us-cert.cisa.gov/ics/advisories/icsa-21-194-03) (Third-party advisory, Government resource)

## Questions

### What is CVE-2020-28400?

CVE-2020-28400 is a high-severity flaw in Dk Standard Ethernet Controller Evaluation Kit Firmware from Siemens, published on 13 July 2021. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can take it offline.

### How serious is CVE-2020-28400?

It scores 7.5 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2020-28400 is 48 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2020-28400 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 1.9%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2020-28400 affect?

For Dk Standard Ethernet Controller Evaluation Kit Firmware from Siemens: all versions. The record lists 157 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2020-28400?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2020-28400 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

Start free (no card, nothing to install): https://www.precursorintelligence.com/register
Book a demo: https://www.precursorintelligence.com/contact