Integer overflow in Firefox for Android and Mozilla Firefox - CVE-2026-16408
Published: July 22, 2026
Vulnerability identifier: #VU139024
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-16408
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer overflow in the Audio/Video: Playback component when processing audio or video content. A remote attacker can supply crafted media content to cause a denial of service.
Affected software
Firefox for Android
Mozilla Firefox
Mozilla Thunderbird
Mozilla Firefox
Mozilla Thunderbird
How to mitigate CVE-2026-16408
Install security update from vendor's website.
Firefox for Android - update to 153.0
Mozilla Firefox - update to 153.0
Mozilla Thunderbird - update to 153.0
Mozilla Firefox - update to 153.0
Mozilla Thunderbird - update to 153.0