Buffer overflow in Mozilla Firefox and Firefox for Android - CVE-2026-2801

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU123238

Buffer overflow in Mozilla Firefox and Firefox for Android - CVE-2026-2801

Published: February 25, 2026


Vulnerability identifier: #VU123238
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-2801
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 crash the browser.

The vulnerability exists due to a boundary error in the JavaScript: WebAssembly component. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


How to mitigate CVE-2026-2801

Install updates from vendor's website.

Sources