CVE-2026-16386CWE-908

CVE-2026-16386

High · published July 21, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
22.9
In the wild
Unconfirmed
What it is

Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00311 · 22.9th percentile
Weakness
CWE-908 · Use of Uninitialized Resource
Published
2026-07-21T17:17Z
Affected products (2)
ProductVersionsFixed in
mozilla/firefox< 153.0.0153.0.0
mozilla/thunderbird< 153.0153.0
References (3)
https://bugzilla.mozilla.org/show_bug.cgi?id=2041916 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-68/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-71/ · [email protected]
EPSS history
Timeline
  • 21 JUL 12:38Z
    Information disclosure due to uninitialized memory in the Graphics: WebGPU component
    cvelistv5