VULNERABILITY INTELLIGENCE

CVE-2026-4684

CVSS score7.5 HIGH
EPSS probability0.37%
CISA KEVNot currently listed
Published2026-03-24
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-362
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-364

Primary references