# What is CVE-2022-26647? > CVE-2022-26647 is a high-severity flaw (CVSS 8.8) in Scalance X200-4p Irt from Siemens, published on 12 July 2022. 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 1.2%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2022-26647 ## 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:** 55 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes. - **Severity:** High (CVSS 8.8 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:** 1.2% (latest exploit-likelihood forecast) - **Published:** 12 July 2022 - **Record last updated:** 11 April 2023 - **Main product:** Scalance X200-4p Irt from Siemens - **Affected products:** 58 ## What is CVE-2022-26647? In plain terms It can be attacked from anywhere on the internet without logging in, but a person has to take an action first. If it works, the attacker can read data, change data and take it offline. ### The official description A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT PRO (All versions < V5.5.2), SCALANCE X202-2IRT (All versions < V5.5.2), SCALANCE X202-2IRT (All versions < V5.5.2), SCALANCE X202-2P IRT (All versions < V5.5.2), SCALANCE X202-2P IRT PRO (All versions < V5.5.2), SCALANCE X204-2 (All versions < V5.2.6), SCALANCE X204-2FM (All versions < V5.2.6), SCALANCE X204-2LD (All versions < V5.2.6), SCALANCE X204-2LD TS (All versions < V5.2.6), SCALANCE X204-2TS (All versions < V5.2.6), SCALANCE X204IRT (All versions < V5.5.2), SCALANCE X204IRT (All versions < V5.5.2), SCALANCE X204IRT PRO (All versions < V5.5.2), SCALANCE X206-1 (All versions < V5.2.6), SCALANCE X206-1LD (All versions < V5.2.6), SCALANCE X208 (All versions < V5.2.6), SCALANCE X208PRO (All versions < V5.2.6), SCALANCE X212-2 (All versions < V5.2.6), SCALANCE X212-2LD (All versions < V5.2.6), SCALANCE X216 (All versions < V5.2.6), SCALANCE X224 (All versions < V5.2.6), SCALANCE XF201-3P IRT (All versions < V5.5.2), SCALANCE XF202-2P IRT (All versions < V5.5.2), SCALANCE XF204 (All versions < V5.2.6), SCALANCE XF204-2 (All versions < V5.2.6), SCALANCE XF204-2BA IRT (All versions < V5.5.2), SCALANCE XF204IRT (All versions < V5.5.2), SCALANCE XF206-1 (All versions < V5.2.6), SCALANCE XF208 (All versions < V5.2.6). The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions. ### What kind of flaw is it? - CWE-330: Use of Insufficiently Random Values ### 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: Yes, a person has to take an action - What an attacker gets: Can read data, change data and take it offline Severity vector: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` ## Is CVE-2022-26647 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 1.2%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 1.2%, 1.2%, 1.2%, 1.2%, 1.2%, 1.2%, 1.2%. ### Timeline - 12 July 2022: Published - 11 April 2023: Record last updated ### How Precursor Intelligence ranks it CVE-2022-26647 scores **55 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-2022-26647? The published record lists 58 products. Versions are as published: "before 5.2.6" means every version up to, but not including, 5.2.6. - [Scalance X200-4p Irt](https://www.precursorintelligence.com/product/siemens/scalance_x200-4p_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance X200-4p Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x200-4p_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [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): all versions - [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): all versions - [Scalance X202-2irt](https://www.precursorintelligence.com/product/siemens/scalance_x202-2irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance X202-2irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x202-2irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Scalance X202-2p Irt](https://www.precursorintelligence.com/product/siemens/scalance_x202-2p_irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance X202-2p Irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x202-2p_irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [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): all versions - [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 5.2.6 - [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 5.2.6 - [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 5.2.6 - [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 5.2.6 - [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 5.2.6 - [Scalance X204irt](https://www.precursorintelligence.com/product/siemens/scalance_x204irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance X204irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Scalance X204irt Pro](https://www.precursorintelligence.com/product/siemens/scalance_x204irt_pro) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance X204irt Pro Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x204irt_pro_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [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 5.2.6 - [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 5.2.6 - [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 5.2.6 - [Scalance X208 Pro](https://www.precursorintelligence.com/product/siemens/scalance_x208_pro) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance X208 Pro Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x208_pro_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 5.2.6 - [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 5.2.6 - [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 5.2.6 - [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 5.2.6 - [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 5.2.6 - [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): all versions - [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): all versions - [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 5.2.6 - [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 5.2.6 - [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): all versions - [Scalance Xf204irt](https://www.precursorintelligence.com/product/siemens/scalance_xf204irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance Xf204irt Firmware](https://www.precursorintelligence.com/product/siemens/scalance_xf204irt_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [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 5.2.6 - [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 5.2.6 ## How do I fix CVE-2022-26647? 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-310038.pdf) (Patch, Vendor advisory) ## Questions ### What is CVE-2022-26647? CVE-2022-26647 is a high-severity flaw in Scalance X200-4p Irt from Siemens, published on 12 July 2022. It can be attacked from anywhere on the internet without logging in, but a person has to take an action first. If it works, the attacker can read data, change data and take it offline. ### How serious is CVE-2022-26647? It scores 8.8 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2022-26647 is 55 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-2022-26647 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 1.2%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2022-26647 affect? For Scalance X200-4p Irt from Siemens: version not specified. The record lists 58 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2022-26647? 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-2022-26647 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