CVE-2026-118014

high

Description

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

References

https://www.mozilla.org/security/advisories/mfsa2026-121/

https://www.mozilla.org/security/advisories/mfsa2026-118/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-110912

https://bugzilla.mozilla.org/show_bug.cgi?id=2082051

Details

Source: Mitre, NVD

Published: 2026-10-27

Updated: 2026-10-27

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.00151