CVE-2026-92021EPSS p20.8%

CVE-2026-92021CVE-2026-92021

Description

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16.

Scoring

CVSS 8.8 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS0.30% probability of exploitation · percentile 20.8% · 2026-10-05T12:00:23Z
Last modified2026-09-20
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.