| Name | CVE-2025-6426 |
| Description | The executable file warning did not warn users before opening files with the `terminal` extension. *This bug only affects Firefox for macOS. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 155.0.1-1 | fixed |
| firefox-esr (PTS) | bookworm | 140.12.0esr-1~deb12u1 | fixed |
| bookworm (security) | 140.15.0esr-1~deb12u1 | fixed | |
| trixie (security), trixie | 140.15.0esr-1~deb13u1 | fixed | |
| forky, sid | 140.15.0esr-1 | fixed | |
| thunderbird (PTS) | bookworm | 1:140.12.0esr-1~deb12u1 | fixed |
| bookworm (security) | 1:140.15.0esr-1~deb12u1 | fixed | |
| trixie | 1:140.12.0esr-1~deb13u1 | fixed | |
| trixie (security) | 1:140.15.0esr-1~deb13u1 | fixed | |
| forky | 1:140.14.0esr-1 | fixed | |
| sid | 1:153.2.0esr-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| firefox | source | (unstable) | (not affected) | |||
| firefox-esr | source | (unstable) | (not affected) | |||
| thunderbird | source | (unstable) | (not affected) |
- firefox <not-affected> (MacOS-specific)
- firefox-esr <not-affected> (MacOS-specific)
- thunderbird <not-affected> (MacOS-specific)
https://www.mozilla.org/en-US/security/advisories/mfsa2025-51/#CVE-2025-6426
https://www.mozilla.org/en-US/security/advisories/mfsa2025-53/#CVE-2025-6426
https://www.mozilla.org/en-US/security/advisories/mfsa2025-54/#CVE-2025-6426