vulnerability
MFSA2023-45 Firefox: Security Vulnerabilities fixed in Firefox 119 (CVE-2023-5731)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Oct 24, 2023 | Oct 25, 2023 | Mar 27, 2026 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Oct 24, 2023
Added
Oct 25, 2023
Modified
Mar 27, 2026
Description
Memory safety bugs present in Firefox 118. 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.
Solution
mozilla-firefox-upgrade-119_0
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.