CVE-2025-1934

Unexpected GC during RegExp bailout processing

CVSS 6.5 MEDIUMEPSS 0.4%

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

04 Mar 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

Mozilla · Firefox Mozilla · Thunderbird

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1942881 https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html https://www.mozilla.org/security/advisories/mfsa2025-14/https://www.mozilla.org/security/advisories/mfsa2025-16/https://www.mozilla.org/security/advisories/mfsa2025-17/https://www.mozilla.org/security/advisories/mfsa2025-18/