CVE-2025-41256 HIGH

CVE-2025-41256: Cyberduck and Mountain Duck - Weak Hash Algorithm for Certificate Fingerprint

Vendor Iterate Gmbh
Product Cyberduck
Weakness CWE-328 · Weak hash
Published June 25, 2025
Last update June 25, 2025
View on NVD All CVEs

CVSS base score

7.4/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 25, 2025 CVE published
June 25, 2025 Record updated