CVE-2023-4056
moderate-risk
Published 2023-08-01
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. 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 < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Do I need to act?
-
0.60% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (4)
References (16)
Mailing List
https://www.debian.org/security/2023/dsa-5464
Mailing List
https://www.debian.org/security/2023/dsa-5469
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-29/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-30/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-31/
Mailing List
https://www.debian.org/security/2023/dsa-5464
Mailing List
https://www.debian.org/security/2023/dsa-5469
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-29/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-30/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-31/
44
/ 100
moderate-risk
Severity
32/34 · Critical
Exploitability
2/34 · Minimal
Exposure
10/34 · Low