Summary
Opcenter RDnL is affected by missing authentication in critical function in ‘ActiveMQ Artemis’. An unauthenticated attacker within the adjacent network could use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This could potentially result in availability impacts or message injection into any queue via the rogue broker. Breaking the integrity of a message has a low impact due to missing auto refresh functionality and it does not contain any confidential information.
ActiveMQ Artemis has released a new version and Siemens recommends to update to the latest version.
Vulnerabilities 1
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Critical 9.3CVE-2026-27446 EPSS 11%
Apache Artemis, Apache ActiveMQ Artemis: Auth bypass for Core downstream federation
Missing Authentication for Critical Function (CWE-306) vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an at…
Revision history
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Publication Date
References
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SSA-085541: Missing Authentication in Critical Function in ActiveMQ Artemis (CVE-2026-27446) in Opcenter RDnL - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-085541.html