Intel

CVE-2026-51540

opener_project opener: Sicherheitsluecke

criticalEPSS 0.6%

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).

Source: NVD (NIST)CVE.org (MITRE)cvelistv5

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

opener_projectopener

Metrics

XIEM Effective CVSS
9.8
Source: nvd-v3
EPSS percentile
45.3 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
87.52
Exploit maturity
no public PoC known
CVSS v3
9.8
EPSS score
0.6 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-07-13 22:16 UTC

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. Initial Analysis2026-08-11 16:27 UTC· nvd@nist.gov
    • CPE Configuration: OR *cpe:2.3:a:opener_project:opener:2.3.0:*:*:*:*:*:*:*
    • Reference Type: MITRE: https://gist.github.com/MrAlaskan/5e0c2af7f4a1d188814c7fa8f812c8da Types: Third Party Advisory
    • Reference Type: MITRE: https://github.com/EIPStackGroup/OpENer/issues/568 Types: Exploit, Issue Tracking, Vendor Advisory
    • Reference Type: CISA-ADP: https://github.com/EIPStackGroup/OpENer/issues/568 Types: Exploit, Issue Tracking, Vendor Advisory

Linked advisories