CVE-2025-41255

Cyberduck and Mountain Duck - Improper Certificate Store Handling

State: Published
Severity: 8.0 High
Published: Jun 25, 2025
Updated: Jun 25, 2025
Reserved: Apr 16, 2025

Description

Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.

This issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.

Scores

CVSS	Score	Vector	Source
3.1	8.0 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N	sba-research

Weaknesses

CWE-266 Incorrect Privilege Assignment

Affected Products

Product	Versions
Cyberduckiterate GmbH	9.1.6 and earlierAffected
Mountain Duckiterate GmbH	4.17.5 and earlierAffected

References

https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-01_Cyberduck_Mountain_Duck_Certificate_Handlingthird-party-advisory
https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-vjjc-grpp-m655vendor-advisory

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