CVE-2025-1934
Unexpected GC during RegExp bailout processing
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 4, 2025 |
| Last Updated | Apr 13, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1942881 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-14/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-16/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-17/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-18/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html
Credits
Nils Bars