AI Score
Confidence
High
EPSS
Percentile
46.8%
SSVC
Exploitation
none
Automatable
yes
Technical Impact
total
Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
bugzilla.mozilla.org/buglist.cgi?bug_id=1836607%2C1840918%2C1848694%2C1848833%2C1850191%2C1850259%2C1852596%2C1853201%2C1854002%2C1855306%2C1855640%2C1856695
lists.debian.org/debian-lts-announce/2023/10/msg00037.html
lists.debian.org/debian-lts-announce/2023/10/msg00042.html
www.debian.org/security/2023/dsa-5535
www.debian.org/security/2023/dsa-5538
www.mozilla.org/security/advisories/mfsa2023-45/
www.mozilla.org/security/advisories/mfsa2023-46/
www.mozilla.org/security/advisories/mfsa2023-47/