VULNERABILITY INTELLIGENCE

CVE-2026-6754

CVSS score7.5 HIGH
EPSS probability0.39%
CISA KEVNot currently listed
Published2026-04-21
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Weakness classification

  • CWE-416: Use After Free
  • CWE-825: Expired Pointer Dereference

Primary references