CVE-2025-4086
Specially crafted filename could be used to obscure download type
- State
- Published
- Severity
- 6.5 Medium
- Published
- Apr 29, 2025
- Updated
- Apr 13, 2026
- Reserved
- Apr 29, 2025
Description
A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog. *This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N | CISA-ADP |
Weaknesses
- CWE-451 User Interface (UI) Misrepresentation of Critical Information
Affected Products
| Product | Versions |
|---|---|
FirefoxMozilla |
|
ThunderbirdMozilla |
|
References
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