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VulnerabilityPublished

CVE-2026-41551: Siemens ROS# · Relative Path Traversal

Affects Siemens ROS#Source CVE Database V5

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Not known to be exploited · CVSS 9.1 Critical : upgrade to 2.2.2 as a priority.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.2.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Siemens ROS# to 2.2.2.

Affected software

ProductAffectedFixed in
SiemensROS#Affected
  • <2.2.2
Fixed in
  • 2.2.2

AI-suggested

If you cannot patch yet, restrict network access to ROS# instances and monitor for suspicious activity related to file access attempts. Avoid exposing vulnerable versions to untrusted networks.

Description

CVE-2026-41551 is a critical relative path traversal vulnerability in Siemens ROS# versions prior to 2.2.2. The issue arises from improper sanitization of user input, allowing remote attackers to access arbitrary files on affected devices. The vulnerability has a high CVSS score of 9.1, indicating significant confidentiality and integrity impact without requiring privileges or user interaction. There are no known exploits in the wild at this time.

References

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