Siemens Opcenter RDnL

p a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-134-09.json" strong View CSAF /strong /a /p h2 Summary /h2 p strong 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. /strong /p p The following versions of Siemens Opcenter RDnL are affected: /p ul li Opcenter RDnL vers:all/* /li /ul div class="csaf-table" table class="tablesaw tablesaw-stack" data-tablesaw-mode="stack" data-tablesaw-minimap thead tr th role="columnheader" data-tablesaw-priority="persist" CVSS /th th role="columnheader" Vendor /th th role="columnheader" Equipment /th th role="columnheader" Vulnerabilities /th /tr /thead tbody tr td v3 7.1 /td td Siemens /td td Siemens Opcenter RDnL /td td Missing Authentication for Critical Function /td /tr /tbody /table /div h3 Background /h3 ul li strong Critical Infrastructure Sectors: /strong Critical Manufacturing /li li strong Countries/Areas Deployed: /strong Worldwide /li li strong Company Headquarters Location: /strong Germany /li /ul hr h2 Vulnerabilities /h2 div class="csaf-accordion" p a class="csaf-accordion-toggle-all" href="#" Expand All + /a /p div class="csaf-accordion-item" h3 a class="csaf-accordion-toggle" href="#" CVE-2026-27446 /a /h3 div class="csaf-accordion-content" p 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 attacker-controlled rogue broker. This could potentially result in message injection into any queue and/or message exfiltration from any queue via the rogue broker. This impacts environments that allow both: - incoming Core protocol connections from untrusted sources to the broker - outgoing Core protocol connections from the broker to untrusted targets /p p a href="https://www.cve.org/CVERecord?id=CVE-2026-27446" View CVE Details /a /p hr h4 Affected Products /h4 h5 Siemens Opcenter RDnL /h5 div class="ics-vendor-version-status" div class="ics-vendor" strong Vendor: /strong br Siemens /div div class="ics-version" strong Product Version: /strong br Opcenter RDnL /div div class="ics-status" strong Product Status: /strong br known_affected /div /div div class="ics-remediations" h6 Remediations /h6 p strong Mitigation /strong br Implement and deploy a Core interceptor to deny