Mozilla · Thunderbird · CVE-2026-6785
**Name of the Vulnerable Software and Affected Versions**
Firefox ESR version 115.34
Firefox ESR version 140.9
Thunderbird ESR version 140.9
Firefox version 149
Thunderbird version 149
**Description**
Memory safety bugs involving memory corruption could allow an attacker to run arbitrary code.
**Recommendations**
Update Firefox ESR 115.34 to version 115.35.
Update Firefox ESR 140.9 to version 140.10.
Update Thunderbird ESR 140.9 to version 140.10.
Update Firefox 149 to version 150.
Update Thunderbird 149 to version 150.