CVE-2025-41255

Cyberduck and Mountain Duck - Improper Certificate Store Handling

Published Jun 25, 2025 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-19096 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Cyberduck and Mountain Duck - Improper Certificate Store Handling
Weaknesses CWE-266
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
sba-research
Published
Updated
Jun 25, 2025, 1:33 PM
Reserved
Apr 16, 2025, 9:37 AM
Status
Deferred
Published
Jun 25, 2025, 10:15 AM
Modified
Jun 17, 2026, 9:22 AM