firefox is vulnerable to arbitrary code execution. A memory corruption allows an attacker to exploit the vulnerability to run arbitrary code on the host OS.
access.redhat.com/errata/RHSA-2021:2206
access.redhat.com/security/updates/classification/#critical
bugzilla.mozilla.org/buglist.cgi?bug_id=1602862%2C1703191%2C1703760%2C1704722%2C1706041
bugzilla.redhat.com/show_bug.cgi?id=1966831
bugzilla.redhat.com/show_bug.cgi?id=1966831
security.gentoo.org/glsa/202208-14
www.mozilla.org/security/advisories/mfsa2021-23/
www.mozilla.org/security/advisories/mfsa2021-24/
www.mozilla.org/security/advisories/mfsa2021-26/