VULNERABILITY INTELLIGENCE

CVE-2026-8956

CVSS score9.8 CRITICAL
EPSS probability0.60%
CISA KEVNot currently listed
Published2026-05-19
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-190

Primary references