CVE-2025-41255

Cyberduck and Mountain Duck - Improper Certificate Store Handling

CVSS 8 HIGHEPSS 0.2%CWE-266

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

25 Jun 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

iterate GmbH · Cyberduck iterate GmbH · Mountain Duck

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-vjjc-grpp-m655 https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-01_Cyberduck_Mountain_Duck_Certificate_Handling