vulnerability
MFSA2024-21 Firefox: Security Vulnerabilities fixed in Firefox 126 (CVE-2024-4774)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:N/I:P/A:P) | May 14, 2024 | May 15, 2024 | Mar 27, 2026 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:P)
Published
May 14, 2024
Added
May 15, 2024
Modified
Mar 27, 2026
Description
The `ShmemCharMapHashEntry()` code was susceptible to potentially undefined behavior by bypassing the move semantics for one of its data members. This vulnerability affects Firefox < 126.
Solution
mozilla-firefox-upgrade-126_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.