Critical severity9.8NVD Advisory· Published Jul 13, 2026· Updated Aug 11, 2026
CVE-2026-51540
CVE-2026-51540
Description
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).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- cpe:2.3:a:opener_project:opener:2.3.0:*:*:*:*:*:*:*
- Range: <=2.3.0 up to commit 76b95cf
Patches
Vulnerability mechanics
References
2- github.com/EIPStackGroup/OpENer/issues/568nvdExploitIssue TrackingVendor Advisory
- gist.github.com/MrAlaskan/5e0c2af7f4a1d188814c7fa8f812c8danvdThird Party Advisory
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