PT-2026-84178 · Mozilla · Firefox+1

·

CVE-2026-84125

·

Published

2026-09-01

·

Updated

2026-09-05

CVSS v3.1

5.4

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions Mozilla Firefox versions prior to 155 Mozilla Firefox ESR versions prior to 153.2
Description A use-after-free issue exists within the DOM: Core and HTML components. A use-after-free occurs when an application continues to use a pointer after it has been freed, which can lead to crashes or arbitrary code execution.
Recommendations Update Mozilla Firefox to version 155. Update Mozilla Firefox ESR to version 153.2.

Fix

Use After Free

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

CVE-2026-84125
OPENSUSE-SU-2026:11666-1
OPENSUSE-SU-2026:11677-1

Affected Products

Firefox
Firefox Esr