CVEvulnerability

CVE-2026-4684

7.5 HIGH Published 2026-03-24 Modified 2026-07-15 Official page ↗
Status
Modified
Published
2026-03-24
Last modified
2026-07-15
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-362, CWE-364, CWE-416

Description

Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Affected configurations

• mozilla firefox (< 115.34.0) • mozilla firefox (< 149.0) • mozilla firefox (>= 128.0 < 140.9.0)

Related

Weakness · CWE (3)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
  • CWE-364 Signal Handler Race Condition weakness
  • CWE-416 Use After Free weakness

References