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CVE-2025-41256

Good to know:

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Date: June 25, 2025

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.

Severity Score

Related Resources (4)

https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash
https://nvd.nist.gov/vuln/detail/CVE-2025-41256
https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv
https://www.mend.io/vulnerability-database/CVE-2025-41256

Severity Score

Weakness Type (CWE)

Use of Weak Hash

CWE-328

Top Fix

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Upgrade Version

Upgrade to version https://github.com/iterate-ch/cyberduck.git - release-9-1-7

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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