CVE-2025-5272

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 139 Thunderbird versions prior to 139

Description The issue is related to memory safety bugs that have been identified in Firefox and Thunderbird. These bugs have shown evidence of memory corruption, and it is presumed that with sufficient effort, some of these bugs could be exploited to run arbitrary code.

Recommendations For Firefox versions prior to 139, update to version 139 or later to resolve the issue. For Thunderbird versions prior to 139, update to version 139 or later to resolve the issue.