CVE-2026-51540

Name of the Vulnerable Software and Affected Versions OpENer version 2.3.0 (master branch up to commit 76b95cf)

Description A severe memory corruption issue exists due to an integer underflow during the processing of connected explicit messages within the SendUnitData() function. An integer underflow occurs when an arithmetic operation results in a value lower than the minimum representable value for that data type, which in this case leads to memory corruption.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.