CVE-2026-74955EPSS p33.7%

CVE-2026-74955CVE-2026-74955

mozilla / firefox

Description

Privilege escalation in the Request Handling component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Scoring

CVSS 8.8 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS0.41% probability of exploitation · percentile 33.7% · 2026-10-06T12:00:23Z
Last modified2026-08-21
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.