# What is CVE-2024-50558?

> CVE-2024-50558 is a medium-severity flaw (CVSS 4.3) in Scalance M804pb from Siemens, published on 12 November 2024. 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 0.3%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2024-50558

## 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:** 17 out of 100 (Info); action: Track. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 4.3 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:** 0.3% (latest exploit-likelihood forecast)
- **Published:** 12 November 2024
- **Record last updated:** 13 November 2024
- **Main product:** Scalance M804pb from Siemens
- **Affected products:** 52

## What is CVE-2024-50558? In plain terms

It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can slow it down.

### The official description

A vulnerability has been identified in RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) (All versions < V8.2), RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) (All versions < V8.2), SCALANCE M804PB (6GK5804-0AP00-2AA2) (All versions < V8.2), SCALANCE M812-1 ADSL-Router (6GK5812-1AA00-2AA2) (All versions < V8.2), SCALANCE M812-1 ADSL-Router (6GK5812-1BA00-2AA2) (All versions < V8.2), SCALANCE M816-1 ADSL-Router (6GK5816-1AA00-2AA2) (All versions < V8.2), SCALANCE M816-1 ADSL-Router (6GK5816-1BA00-2AA2) (All versions < V8.2), SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) (All versions < V8.2), SCALANCE M874-2 (6GK5874-2AA00-2AA2) (All versions < V8.2), SCALANCE M874-3 (6GK5874-3AA00-2AA2) (All versions < V8.2), SCALANCE M874-3 3G-Router (CN) (6GK5874-3AA00-2FA2) (All versions < V8.2), SCALANCE M876-3 (6GK5876-3AA02-2BA2) (All versions < V8.2), SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) (All versions < V8.2), SCALANCE M876-4 (6GK5876-4AA10-2BA2) (All versions < V8.2), SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) (All versions < V8.2), SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) (All versions < V8.2), SCALANCE MUM853-1 (A1) (6GK5853-2EA10-2AA1) (All versions < V8.2), SCALANCE MUM853-1 (B1) (6GK5853-2EA10-2BA1) (All versions < V8.2), SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) (All versions < V8.2), SCALANCE MUM856-1 (A1) (6GK5856-2EA10-3AA1) (All versions < V8.2), SCALANCE MUM856-1 (B1) (6GK5856-2EA10-3BA1) (All versions < V8.2), SCALANCE MUM856-1 (CN) (6GK5856-2EA00-3FA1) (All versions < V8.2), SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) (All versions < V8.2), SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) (All versions < V8.2), SCALANCE S615 EEC LAN-Router (6GK5615-0AA01-2AA2) (All versions < V8.2), SCALANCE S615 LAN-Router (6GK5615-0AA00-2AA2) (All versions < V8.2). Affected devices improperly manage access control for read-only users. This could allow an attacker to cause a temporary denial of service condition.

### What kind of flaw is it?

- CWE-284: Improper Access Control

### 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: An ordinary user account
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can slow it down

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

## Is CVE-2024-50558 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 0.3%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%.

### Timeline

- 12 November 2024: Published
- 13 November 2024: Record last updated

### How Precursor Intelligence ranks it

CVE-2024-50558 scores **17 out of 100 (Info)**, with the action "Track".

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-2024-50558?

The published record lists 52 products. Versions are as published: "before 8.2" means every version up to, but not including, 8.2.

- [Scalance M804pb](https://www.precursorintelligence.com/product/siemens/scalance_m804pb) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Ruggedcom Rm1224 Lte(4g) Eu by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Ruggedcom Rm1224 Lte(4g) Eu Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Ruggedcom Rm1224 Lte(4g) Nam by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Ruggedcom Rm1224 Lte(4g) Nam Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M804pb Firmware](https://www.precursorintelligence.com/product/siemens/scalance_m804pb_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance M812-1 (annex A) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M812-1 (annex A) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance M812-1 (annex B) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M812-1 (annex B) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance M816-1 (annex A) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M816-1 (annex A) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance M816-1 (annex B) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M816-1 (annex B) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M826-2](https://www.precursorintelligence.com/product/siemens/scalance_m826-2) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance M826-2 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_m826-2_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M874-2](https://www.precursorintelligence.com/product/siemens/scalance_m874-2) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance M874-2 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_m874-2_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M874-3](https://www.precursorintelligence.com/product/siemens/scalance_m874-3) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M874-3 (cn) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M874-3 (cn) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M874-3 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_m874-3_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M876-3](https://www.precursorintelligence.com/product/siemens/scalance_m876-3) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M876-3 (rok) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M876-3 (rok) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M876-3 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_m876-3_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M876-4](https://www.precursorintelligence.com/product/siemens/scalance_m876-4) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M876-4 (eu) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M876-4 (eu) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance M876-4 (nam) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance M876-4 (nam) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance M876-4 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_m876-4_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum853-1 (a1) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum853-1 (a1) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum853-1 (b1) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum853-1 (b1) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum853-1 (eu) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum853-1 (eu) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum856-1 (a1) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum856-1 (a1) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum856-1 (b1) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum856-1 (b1) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum856-1 (cn) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum856-1 (cn) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum856-1 (eu) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum856-1 (eu) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- Scalance Mum856-1 (row) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- Scalance Mum856-1 (row) Firmware by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance S615](https://www.precursorintelligence.com/product/siemens/scalance_s615) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance S615 Eec](https://www.precursorintelligence.com/product/siemens/scalance_s615_eec) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Scalance S615 Eec Firmware](https://www.precursorintelligence.com/product/siemens/scalance_s615_eec_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2
- [Scalance S615 Firmware](https://www.precursorintelligence.com/product/siemens/scalance_s615_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 8.2

## How do I fix CVE-2024-50558?

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/html/ssa-354112.html) (Patch, Vendor advisory)

## Questions

### What is CVE-2024-50558?

CVE-2024-50558 is a medium-severity flaw in Scalance M804pb from Siemens, published on 12 November 2024. It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can slow it down.

### How serious is CVE-2024-50558?

It scores 4.3 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2024-50558 is 17 out of 100, which is Info. Its action is "Track". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2024-50558 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 0.3%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2024-50558 affect?

For Scalance M804pb from Siemens: version not specified. The record lists 52 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2024-50558?

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-2024-50558 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.

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