Mozilla · Thunderbird · CVE-2026-8957
**Name of the Vulnerable Software and Affected Versions**
Firefox versions prior to 151
Firefox ESR versions prior to 140.11
Thunderbird versions prior to 151
Thunderbird versions prior to 140.11
**Description**
Privilege escalation exists in the Enterprise Policies component.
**Recommendations**
Update Firefox to version 151.
Update Firefox ESR to version 140.11.
Update Thunderbird to version 151.
Update Thunderbird to version 140.11.