# What is CVE-2013-5944? > CVE-2013-5944 is a critical-severity flaw (CVSS 10.0) in Scalance X-200 from Siemens, published on 3 October 2013. 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 3.2%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2013-5944 ## At a glance - **Verdict:** Fix this soon. Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. - **Precursor Intelligence risk score:** 54 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes. - **Severity:** Critical (CVSS 10.0 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:** 3.2% (latest exploit-likelihood forecast) - **Published:** 3 October 2013 - **Record last updated:** 16 June 2026 - **Main product:** Scalance X-200 from Siemens - **Affected products:** 3 ## What is CVE-2013-5944? In plain terms It can be attacked from anywhere on the internet without logging in. If it works, the attacker can read data, change data and take it offline. ### The official description The integrated web server on Siemens SCALANCE X-200 switches with firmware before 4.5.0 and X-200IRT switches with firmware before 5.1.0 does not properly enforce authentication requirements, which allows remote attackers to perform administrative actions via requests to the management interface. ### What kind of flaw is it? - CWE-287: Improper Authentication ### 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 - What an attacker gets: Can read data, change data and take it offline Severity vector: `AV:N/AC:L/Au:N/C:C/I:C/A:C` ## Is CVE-2013-5944 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 3.2%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 3.2%, 3.2%, 3.2%, 3.2%, 3.2%, 3.2%, 3.2%. ### Timeline - 3 October 2013: Published - 16 June 2026: Record last updated ### How Precursor Intelligence ranks it CVE-2013-5944 scores **54 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-2013-5944? The published record lists 3 products. - [Scalance X-200](https://www.precursorintelligence.com/product/siemens/scalance_x-200) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Scalance X-200 Series Firmware](https://www.precursorintelligence.com/product/siemens/scalance_x-200_series_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 4.4, up to 5.0.1 - [Scalance X-200irt](https://www.precursorintelligence.com/product/siemens/scalance_x-200irt) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified ## How do I fix CVE-2013-5944? 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 - [siemens.com](http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-176087.pdf) (Vendor advisory) - [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-176087.pdf) ## Questions ### What is CVE-2013-5944? CVE-2013-5944 is a critical-severity flaw in Scalance X-200 from Siemens, published on 3 October 2013. It can be attacked from anywhere on the internet without logging in. If it works, the attacker can read data, change data and take it offline. ### How serious is CVE-2013-5944? It scores 10.0 out of 10 on the CVSS severity scale, which is critical. Our risk score for CVE-2013-5944 is 54 out of 100, which is Medium. Its action is "Plan remediation". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. ### Is CVE-2013-5944 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 3.2%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2013-5944 affect? For Scalance X-200 from Siemens: version not specified. The record lists 3 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2013-5944? 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-2013-5944 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