CVE-2026-109704

HIGHCVSS 8.8

Description

Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Timeline

Published:October 13th, 2026 1:17 PM

Last modified:October 14th, 2026 4:17 PM

CVSS Scoring

CVSS v3: 8.8 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-269

References & Reports

Advisories, patches, and third-party reports

https://bugzilla.mozilla.org/show_bug.cgi?id=2037979
https://www.mozilla.org/security/advisories/mfsa2026-106/
https://www.mozilla.org/security/advisories/mfsa2026-108/
https://www.mozilla.org/security/advisories/mfsa2026-109/
https://www.mozilla.org/security/advisories/mfsa2026-110/

Source: NIST NVD · Data may lag official sources by up to one minute