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6.5 Medium

CVE-2025-4086 A specially crafted filename containing a large number of encoded newline characters could obscure the file's…

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.

Affected products and versions

Product Affected versions Fixed in
Firefox 138 earliest → < 138 138
Thunderbird 138 earliest → < 138 138

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