CVE-2025-4086
CVSS 3.1 Score 6.5 of 10 (medium)
Details
Published Apr 29, 2025
Updated: May 9, 2025
CWE ID 451
Summary
CVE-2025-4086 is a vulnerability that affects Thunderbird for Android. A carefully crafted file name, containing an excessive number of encoded newline characters, can conceal the file extension in the download dialog. This deception could potentially lead users to open files with incorrect or hidden extensions. It is essential to note that only Thunderbird for Android versions prior to 138 are vulnerable, while other Thunderbird and Firefox versions, including Firefox 138, remain unaffected.
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Affected Products
- Mozilla Firefox
- Mozilla Thunderbird
Affected Vendors
- Mozilla