CVE-2026-12293

Use-after-free in the Graphics: WebGPU component

Critical · published June 16, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
21.8
In the wild
Unconfirmed
What it is

Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00302 · 21.8th percentile
Published
2026-06-16T11:52Z
EPSS history
Timeline
  • 16 JUN 11:52Z
    Use-after-free in the Graphics: WebGPU component
    cvelistv5