Heap-based buffer overflow in Firefox for Android - CVE-2026-3845
Published: March 10, 2026
Vulnerability identifier: #VU123685
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-3845
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the Audio/Video: Playback component. A remote attacker can trick the victim into visiting a specially crafted website, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Firefox for Android
How to mitigate CVE-2026-3845
Install updates from vendor's website.
Firefox for Android - update to 148.0.2