Vulnerability DatabaseCVE-2025-41256
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CVE-2025-41256
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.
Affected Packages
https://github.com/iterate-ch/cyberduck.git (GITHUB):
Affected version(s) >=release-2-1beta2 <release-9-1-7
Fix Suggestion:
Update to version release-9-1-7
Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (2)
https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash
https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv
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CVSS v4
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Use of Weak Hash
CWE-328
EPSS
Base Score:
0.01