CVE-2025-6426
published 2025-06-24CVE-2025-6426: 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…
PriorityP343high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.17%
7.0th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | — | — |
| debian | firefox-esr | — | — |
| debian | thunderbird | — | — |
| mozilla | firefox | < 128.12.0 | 128.12.0 |
| mozilla | firefox | < 140.0 | 140.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | >= 0 < 1:128.12.0+build1-0ubuntu0.22.04.1 | 1:128.12.0+build1-0ubuntu0.22.04.1 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8LOW
vendor_redhat8.8HIGH
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2025-07-22
CVE-2025-4083 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart thunderbird to
make all the necessary changes.
Red Hat
firefox: thunderbird: No warning when opening executable terminal files on macOS
vendor_redhat·2025-06-24·CVSS 8.8
CVE-2025-6426 [HIGH] firefox: thunderbird: No warning when opening executable terminal files on macOS
firefox: thunderbird: No warning when opening executable terminal files on macOS
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 affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: The executable file warning did not warn users before opening files with the terminal extension. This bug only affects Firefox and Thunderbird for macOS. Other versions of Thunderbird are unaffected.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundat
Debian
CVE-2025-6426: firefox - The executable file warning did not warn users before opening files with the `te...
vendor_debian·2025·CVSS 8.8
CVE-2025-6426 [HIGH] CVE-2025-6426: firefox - The executable file warning did not warn users before opening files with the `te...
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 affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12.
Scope: local
sid: resolved
Mozilla
Mozilla Foundation Security Advisory 2025-53: CVE-2025-6426
vendor_mozilla·CVSS 8.8
CVE-2025-6426 [HIGH] Mozilla Foundation Security Advisory 2025-53: CVE-2025-6426
Mozilla Foundation Security Advisory 2025-53
CVE: CVE-2025-6426
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 128.12
Mozilla
Mozilla Foundation Security Advisory 2025-54: CVE-2025-6426
vendor_mozilla·CVSS 8.8
CVE-2025-6426 [HIGH] Mozilla Foundation Security Advisory 2025-54: CVE-2025-6426
Mozilla Foundation Security Advisory 2025-54
CVE: CVE-2025-6426
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140
Mozilla
Mozilla Foundation Security Advisory 2025-55: CVE-2025-6426
vendor_mozilla·CVSS 8.8
CVE-2025-6426 [HIGH] Mozilla Foundation Security Advisory 2025-55: CVE-2025-6426
Mozilla Foundation Security Advisory 2025-55
CVE: CVE-2025-6426
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 128.12
Mozilla
Mozilla Foundation Security Advisory 2025-51: CVE-2025-6426
vendor_mozilla·CVSS 8.8
CVE-2025-6426 [HIGH] Mozilla Foundation Security Advisory 2025-51: CVE-2025-6426
Mozilla Foundation Security Advisory 2025-51
CVE: CVE-2025-6426
Product: Firefox
Impact: high
Fixed in: Firefox 140
GHSA
GHSA-9x34-3cq7-4hf6: The executable file warning did not warn users before opening files with the `terminal` extension
ghsa_unreviewed·2025-06-26
CVE-2025-6426 [HIGH] CWE-345 GHSA-9x34-3cq7-4hf6: The executable file warning did not warn users before opening files with the `terminal` extension
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 affects Firefox < 140 and Firefox ESR < 128.12.
OSV
CVE-2025-6426: The executable file warning did not warn users before opening files with the `terminal` extension
osv·2025-06-24·CVSS 8.8
CVE-2025-6426 [HIGH] CVE-2025-6426: The executable file warning did not warn users before opening files with the `terminal` extension
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 affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12.
No detection rules found.
No public exploits indexed.
2025-06-24
Published