ICSA-25-294-04: Siemens RUGGEDCOM ROS Devices

CISA's summary

Summary: Multiple vulnerabilities affect the RUGGEDCOM Operating System (ROS). Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.

Products, as the advisory lists them

DeSpy has not checked any unit, hardware revision or firmware.

Vulnerabilities in this advisory

• CVE-2023-52236 — CVE-2023-52236 · CWE-327

  The affected products support insecure cryptographic algorithms. An attacker could leverage these legacy algorithms to achieve a man-in-the-middle attack or impersonate communicating parties.

• CVE-2025-41222 — CVE-2025-41222 · CWE-755

  Affected devices do not properly handle malformed TLS handshake messages. This could allow an attacker with network access to the webserver to cause a denial of service resulting in the web server and the device to crash.

• CVE-2025-41223 — CVE-2025-41223 · CWE-327

  The affected devices support the TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 cipher suite, which uses CBC (Cipher Block Chaining) mode that is known to be vulnerable to timing attacks. This could allow an attacker to compromise the integrity and confidentiality of encrypted communications.

• CVE-2025-41224 — CVE-2025-41224 · CWE-693

  The affected products do not properly enforce interface access restrictions when changing from management to non-management interface configurations until a system reboot occurs, despite configuration being saved. This could allow an attacker with network access and credentials to gain access to device through non-management and maintain SSH access to the device until reboot.

Acknowledgments, as the advisory lists them

• Thomas Riedmaier, Siemens Energy: reporting these vulnerabilities to Siemens.

The advisory's legal notice

The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.

Sources

• The advisory at cisa.gov
• The CSAF document (JSON)

DeSpy's copy of this version is dated 2026-09-28.