# CVE-2026-109097: Siemens ROS# code injection in message definition parsing

Source: https://junglewise.ai/threats/cve-2026-109097-a-vulnerability-has-been-identified-in-ros-all-versions-v2-3-1  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-109097 · Severity: high · CVSS 8.2 · Published 2026-11-10

ROS# is a .NET library that enables applications to communicate with ROS (Robot Operating System) robotics nodes. A code injection vulnerability in message definition file parsing allows an attacker who can supply a crafted file to inject and execute arbitrary code in applications using the library. This could lead to complete compromise of any application or robotics system using the affected ROS# version.

Vendors: [Siemens](https://junglewise.ai/threats/vendors/siemens).

## Quick answers

**Is CVE-2026-109097 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109097 being exploited in the wild.

**How severe is CVE-2026-109097?** High severity, with a CVSS score of 8.2, published 10 November 2026.

**Which products and versions are affected?** Siemens ROS# All versions before 2.3.1.

**Is there a fix for CVE-2026-109097?** Yes: fixed in ROS# 2.3.1 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-109097 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-109097?** Check whether you run Siemens ROS# at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in ROS# 2.3.1 and later

## Technical details

ROS# versions before 2.3.1 fail to properly escape text in message definition files during code generation, enabling code injection attacks (CWE-94). An attacker with local access who can deliver a malicious message definition file to a user triggers arbitrary code execution in the generated program when that definition is processed. The vulnerability requires user interaction (file opening/processing) and local privilege or access, but no network access is needed.

## Affected products

- Siemens ROS# All versions before 2.3.1

## Timeline

- 2026-11-10: disclosed

## References

- [https://cert-portal.siemens.com/productcert/html/ssa-435267.html](https://cert-portal.siemens.com/productcert/html/ssa-435267.html)

## Related threats

- [Siemens ROS# path traversal in file_server](https://junglewise.ai/threats/cve-2026-41551-siemens-ros-path-traversal-in-file-server)