CVE-2025-4086

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.

• CWE-451

• https://bugzilla.mozilla.org/show_bug.cgi?id=1945705Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2025-28/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2025-31/Vendor Advisory

Published

Apr 29, 2025

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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