VULNERABILITY INTELLIGENCE

CVE-2026-84134

CVSS score9.8 CRITICAL
EPSS probability0.57%
CISA KEVNot currently listed
Published2026-09-01
Last modified2026-09-03
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Other issue in the Profile Backup component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.

Weakness classification

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Primary references