CVE-2025-41256
HIGHCyberduck <9.1.6 - Mountain Duck <4.17.5 - TLS Pinning Weakness
Title source: llmDescription
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.
References (2)
Core 2
Core References
Various Sources third-party-advisory
https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash
Vendor Advisory vendor-advisory
https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv
Scores
CVSS v3
7.4
EPSS
0.0011
EPSS Percentile
1.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-328
Status
published
Products (2)
iterate GmbH/Cyberduck
< 9.1.6
iterate GmbH/Mountain Duck
< 4.17.5
Published
Jun 25, 2025
Tracked Since
Feb 18, 2026