CVE-2021-38498

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 93 Thunderbird versions prior to 91.2 Firefox ESR versions prior to 91.2

Description The issue is related to a use-after-free of a languages service object during process shutdown, potentially leading to memory corruption and a crash. This could be exploited by a remote attacker to execute arbitrary code.

Recommendations For Firefox versions prior to 93, update to version 93 or later. For Thunderbird versions prior to 91.2, update to version 91.2 or later. For Firefox ESR versions prior to 91.2, update to version 91.2 or later.