CVE-2021-4127

Name of the Vulnerable Software and Affected Versions Mozilla Thunderbird versions prior to 78.9 Mozilla Firefox ESR versions prior to 78.9

Description The issue is related to an out-of-date graphics library, Angle, which may contain vulnerabilities. It is associated with insufficient input validation in the ANGLE library of Mozilla Firefox ESR and the Thunderbird email client. Exploitation of this issue could allow a remote attacker to execute arbitrary code or cause a denial of service.

Recommendations For Mozilla Thunderbird versions prior to 78.9, update to version 78.9 or later. For Mozilla Firefox ESR versions prior to 78.9, update to version 78.9 or later.