CVE-2025-41255

Name: CVE-2025-41255
Creator: NVD / NIST
Published: 2025-06-25T10:15:21.783+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8/10EPSS 0.16%

Last modified Jun 17, 2026

CVE-2025-41255 is a high-severity vulnerability rated 8/10 on the CVSS scale. 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.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8/10

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

EPSS Probability

0.16%

6.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-266

References

Timeline

Published: Jun 25, 2025
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2025-41255?

How severe is CVE-2025-41255?

CVE-2025-41255 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.

How do I fix CVE-2025-41255?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-41255?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST