CVE-2025-1934
MEDIUM severity · CVSS 6.5
6.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2025-14/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-16/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-17/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-18/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1942881
- https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html