CVE-2026-8952

HIGH

Firefox < 151.0.0 and Thunderbird < 151.0.0 - Privilege Escalation in Application Update Component

Title source: llm
STIX 2.1

Description

Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

References (3)

Core 3

Scores

CVSS v3 8.8
EPSS 0.0004
EPSS Percentile 11.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-269
Status published
Products (4)
mozilla/firefox < 151.0.0
Mozilla/Firefox 151
mozilla/thunderbird < 151.0.0
Mozilla/Thunderbird 151
Published May 19, 2026
Tracked Since May 19, 2026