VULNERABILITY INTELLIGENCE

CVE-2026-51540

CVSS score9.8 CRITICAL

EPSS probability0.57%

CISA KEVNot currently listed

Published2026-07-13

Last modified2026-08-11

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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).

Weakness classification

134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-191

Primary references

cve@mitre.org — Third Party Advisory
cve@mitre.org — Exploit, Issue Tracking, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Issue Tracking, Vendor Advisory