EPSS
Percentile
65.9%
firefox and thunderbird are vulnerable to Remote Code Execution (RCE). An out of date graphics library likely contained vulnerabilities that could potentially be exploited to upload and execute malicious code on the system.
bugzilla.mozilla.org/show_bug.cgi?id=1691547
security-tracker.debian.org/tracker/CVE-2021-4127
www.mozilla.org/security/advisories/mfsa2021-11/
www.mozilla.org/security/advisories/mfsa2021-12/