CVE-2026-51540

EUVD-2026-43606
OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer underflow in the processing of connected explicit messages (SendUnitData).
Wrap or Wraparound
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 34.86%
Affected Products (NVD)
VendorProductVersion
opener_projectopener
2.3.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://gist.github.com/MrAlaskan/5e0c2af7f4a1d188814c7fa8f812c8da
https://github.com/EIPStackGroup/OpENer/issues/568
https://github.com/EIPStackGroup/OpENer/issues/568