{"id":56587,"date":"2025-07-02T02:58:15","date_gmt":"2025-07-02T02:58:15","guid":{"rendered":""},"modified":"2025-08-29T05:02:00","modified_gmt":"2025-08-29T11:02:00","slug":"cve-2025-41255-unrestricted-tls-certificate-handling-in-cyberduck-and-mountain-duck","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-41255-unrestricted-tls-certificate-handling-in-cyberduck-and-mountain-duck\/","title":{"rendered":"CVE-2025-41255: Unrestricted TLS Certificate Handling in Cyberduck and Mountain Duck<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-41255 is a severe vulnerability that affects the popular open-source clients, Cyberduck and Mountain Duck. This vulnerability arises due to the erroneous handling of TLS certificate pinning for untrusted certificates, such as self-signed ones. The systems unnecessarily install these certificates to the Windows Certificate Store of the current user, without any restrictions, thereby opening the door to potential system<\/a> compromise or data leakage. It is critical to address this issue, given the widespread use of these two applications in managing cloud storage and FTP servers<\/a>.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-41255
\nSeverity: High (8.0 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>

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\r\n \r\n \"Ameeba\r\n <\/a>\r\n Share secrets securely\r\n <\/h2>\r\n\r\n

\r\n Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n <\/p>\r\n\r\n

\r\n Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n <\/p>\r\n\r\n