Vulnerability record · CVE-2026-92051 · published 15 September 2026

CVE-2026-92051: NULL pointer dereference vulnerability

Spoofing issue due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

9.1 CVSS 3.1 Critical EPSS 0.57% · top 55.2% CWE-476 · NULL pointer dereference Awaiting Analysis

9.1CVSS 3.1 base score

0.57%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

3References

21 Sep 2026Last modified by NVD

Description

Spoofing issue due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

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

References

Link	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2061393
https://www.mozilla.org/security/advisories/mfsa2026-90/
https://www.mozilla.org/security/advisories/mfsa2026-94/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.2CVE-2026-21525Windows Remote Access Connection Manager null pointer dereference DoSWindows Remote Access Connection Manager contains a null pointer dereference (CWE-476) that lets an unauthorized attacker deny service locally. The f…KEVEPSS 4.8%analysed10 Feb 2026

Source: NIST National Vulnerability Database (record CVE-2026-92051), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.