CVE-2026-51540CWE-191

CVE-2026-51540

Critical · published July 14, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
46.2
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00566 · 46.2th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-07-14T02:16Z
Affected products (1)
ProductVersionsFixed in
opener_project/openerall versions—
References (3)
https://gist.github.com/MrAlaskan/5e0c2af7f4a1d188814c7fa8f812c8da · [email protected]https://github.com/EIPStackGroup/OpENer/issues/568 · [email protected]https://github.com/EIPStackGroup/OpENer/issues/568 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 13 JUL 00:00Z
    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…
    cvelistv5