Buffer overflow in Mozilla Firefox and Firefox for Android - CVE-2026-124945
Published: November 10, 2026
Vulnerability identifier: #VU164585
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-124945
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to potentially cause a denial of service.
The vulnerability exists due to improper handling of an invalid pointer in Firefox's Layout: Text and Fonts component when laying out text. A remote attacker can supply crafted content that triggers an invalid memory reference to potentially crash the browser.
Affected software
Mozilla Firefox
Firefox for Android
Firefox for Android
How to mitigate CVE-2026-124945
Install security update from vendor's website.
Mozilla Firefox - update to 160.0
Firefox for Android - update to 160.0
Firefox for Android - update to 160.0