CVE-2025-41256

Published: Jun 25, 2025Modified: Jun 17, 2026Deferred

7.4

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitability: 2.2 / Impact: 5.2

Source: 1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a (Secondary)

Description

Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak. This issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.

Related CWEs

CWE-328

Use of Weak Hash

The product uses an algorithm that produces a digest (output value) that does not meet security expectations for a hash function that allows an adversary to reasonably determine the original input (preimage attack), find another input that can produce the same hash (2nd preimage attack), or find multiple inputs that evaluate to the same hash (birthday attack).

References (4)

https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv

Source: 1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a

https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash

Source: 1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a

https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.