CVE-2026-16359

Incorrect boundary conditions in the Audio/Video: GMP component

Critical · published July 21, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
17.2
In the wild
Unconfirmed
What it is

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

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:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00263 · 17.2th percentile
Published
2026-07-21T12:38Z
EPSS history
Timeline
  • 21 JUL 12:38Z
    Incorrect boundary conditions in the Audio/Video: GMP component
    cvelistv5