CVE-2026-92051CWE-476

CVE-2026-92051

Critical · published September 15, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
44.1
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00531 · 44.1th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-09-15T17:16Z
Affected products (2)
ProductVersionsFixed in
mozilla/firefox< 156.0.0156.0.0
mozilla/thunderbird< 156.0156.0
References (3)
https://bugzilla.mozilla.org/show_bug.cgi?id=2061393 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-90/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-94/ · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 12:34Z
    Spoofing issue due to invalid pointer in the Graphics component
    cvelistv5