Mozilla · Thunderbird · CVE-2026-5733
**Name of the Vulnerable Software and Affected Versions**
Mozilla Firefox versions prior to 149.0.2
Thunderbird versions prior to 149.0.2
**Description**
A buffer overflow flaw exists in the WebGPU component of Mozilla Firefox and Thunderbird. Successful exploitation could allow a remote attacker to execute arbitrary code.
**Recommendations**
Update Mozilla Firefox to version 149.0.2 or later.
Update Thunderbird to version 149.0.2 or later.