Firefox and Thunderbird are vulnerable to Buffer Overflow. The vulnerability is due to memory safety issues, some of which indicate evidence of memory corruption. It is presumed that with sufficient effort, these bugs could be exploited to execute arbitrary code.
bugzilla.mozilla.org/buglist.cgi?bug_id=1855686%2C1867982%2C1871498%2C1872296%2C1873521%2C1873577%2C1873597%2C1873866%2C1874080%2C1874740%2C1875795%2C1875906%2C1876425%2C1878211%2C1878286
lists.debian.org/debian-lts-announce/2024/03/msg00000.html
lists.debian.org/debian-lts-announce/2024/03/msg00001.html
security-tracker.debian.org/tracker/CVE-2024-1553
www.mozilla.org/security/advisories/mfsa2024-05/
www.mozilla.org/security/advisories/mfsa2024-06/
www.mozilla.org/security/advisories/mfsa2024-07/