CVE-2026-8952CWE-269privilege-escalation

CVE-2026-8952

High · published May 19, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
33.3
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00402 · 33.3th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-05-19T18:16Z
Affected products (2)
ProductVersionsFixed in
mozilla/firefox< 151.0.0151.0.0
mozilla/thunderbird< 151.0.0151.0.0
References (3)
https://bugzilla.mozilla.org/show_bug.cgi?id=2021727 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-46/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-50/ · [email protected]
EPSS history
Timeline
  • 19 MAY 12:29Z
    Privilege escalation in the Application Update component
    cvelistv5