Buffer overflow in Mozilla Firefox and Firefox for Android - CVE-2026-8973

 

Buffer overflow in Mozilla Firefox and Firefox for Android - CVE-2026-8973

Published: May 19, 2026


Vulnerability identifier: #VU131863
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-8973
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox for Android

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to memory corruption in multiple components when processing web content. A remote attacker can trigger the flaws to execute arbitrary code.

Some of the bugs showed evidence of memory corruption.


How to mitigate CVE-2026-8973

Install security update from vendor's website.

Sources