PT-2026-61871 · Mozilla · Firefox

Jacolon Walker · CVE-2026-16359 · Published 2026-07-21 · Updated 2026-07-21

Mitre

CVSS v3.1

9.1

Critical

Base vector

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

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2026-16359

Affected Products

Firefox

References · 5

• https://mozilla.org/security/advisories/mfsa2026-68 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-70 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-69 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-16359 · Security Note
• https://bugzilla.mozilla.org/show_bug.cgi?id=2045424 · Note