CVE-2025-4083
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 affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
| Software | From | Fixed in |
|---|---|---|
| mozilla / firefox | - | 138.0 |
| mozilla / firefox | - | 115.23 |
| mozilla / firefox | 128.0 | 128.10 |
| mozilla / thunderbird | - | 138.0 |
| mozilla / thunderbird | - | 128.10.0 |
- https://bugzilla.mozilla.org/show_bug.cgi?id=1958350
- https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html
- 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/
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