#VU123241 Use-after-free in Mozilla Firefox and Firefox for Android - CVE-2026-2804

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Main Vulnerability Database Vulnerabilities #VU123241

#VU123241 Use-after-free in Mozilla Firefox and Firefox for Android - CVE-2026-2804

Published: February 25, 2026


Vulnerability identifier: #VU123241
Vulnerability risk: Low
CVSSv4.0: 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-2026-2804
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Mozilla Firefox
Firefox for Android
Software vendor:
Mozilla

Description

The vulnerability allows a remote attacker to crash the browser.

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


Remediation

Install updates from vendor's website.

External links