CVE-2026-92005CWE-416

CVE-2026-92005

Medium · published September 15, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
28.2
In the wild
Unconfirmed
What it is

Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00357 · 28.2th percentile
Weakness
CWE-416 · Use After Free
Published
2026-09-15T17:16Z
Affected products (6)
ProductVersionsFixed in
mozilla/firefox< 140.16.0140.16.0
mozilla/firefox≥ 141.0, < 153.3.0153.3.0
mozilla/firefox≥ 154.0.0, < 156.0.0156.0.0
mozilla/thunderbird< 140.16.0140.16.0
mozilla/thunderbird≥ 141.0, < 153.3.0153.3.0
mozilla/thunderbird≥ 154.0, < 156.0156.0
References (7)
https://bugzilla.mozilla.org/show_bug.cgi?id=2056051 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-90/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-92/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-93/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-94/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-95/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-96/ · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 12:33Z
    Use-after-free in the Audio/Video: Web Codecs component
    cvelistv5