Buffer overflow in Mozilla Firefox and Firefox for Android - CVE-2026-16411
Published: July 22, 2026
Vulnerability identifier: #VU139027
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/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-2026-16411
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox for Android
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 Firefox for Android when processing content. A remote attacker can trigger memory safety bugs to execute arbitrary code.
The advisory states that some of these bugs showed evidence of memory corruption.
How to mitigate CVE-2026-16411
Install security update from vendor's website.