Description
Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
References (7)
Core 7
Core References
Third Party Advisory
https://www.debian.org/security/2023/dsa-5561
Release Notes, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-49/
Release Notes, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-50/
Release Notes, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-52/
Scores
CVSS v3
8.8
EPSS
0.0030
EPSS Percentile
53.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-787
Status
published
Products (6)
debian/debian_linux
10.0
debian/debian_linux
11.0
debian/debian_linux
12.0
mozilla/firefox
< 120.0
mozilla/firefox_esr
< 115.5.0
mozilla/thunderbird
< 115.5
Published
Nov 21, 2023
Tracked Since
Feb 18, 2026