CVE-2025-4083
Critical · CVSS 9.1- CVSS
- 9.1
- nvd
- EPSS
- 0.45%
- 37th pct
- KEV
- No
- Class
- oss containerizable
- CWE-653
Description
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1958350
- https://www.mozilla.org/security/advisories/mfsa2025-28/
- https://www.mozilla.org/security/advisories/mfsa2025-29/
- https://www.mozilla.org/security/advisories/mfsa2025-30/
- https://www.mozilla.org/security/advisories/mfsa2025-31/
- https://www.mozilla.org/security/advisories/mfsa2025-32/
- https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html
Status: profiled · ingested 2026-10-05T18:00:53.000Z