vulnerability
MFSA2025-16 Firefox: Security Vulnerabilities fixed in Firefox ESR 128.8 (CVE-2025-1934)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:N/A:C) | Mar 4, 2025 | Mar 5, 2025 | Apr 15, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
Mar 4, 2025
Added
Mar 5, 2025
Modified
Apr 15, 2026
Description
It was possible to interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
Solution
mozilla-firefox-esr-upgrade-128_8
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.