CVE-2025-66406

MEDIUM EPSS 3.2%

Published Dec 3, 20257mo ago · Modified Jun 17, 20262w ago

5.0 CVSS 3.1

Medium

Published Dec 3, 2025 7mo ago

Last Modified Jun 17, 2026 2w ago

Description

Step CA is an online certificate authority for secure, automated certificate management for DevOps. Prior to 0.29.0, there is an improper authorization check for SSH certificate revocation. This affects deployments configured with the SSHPOP provisioner. This vulnerability is fixed in 0.29.0.

CVSS Details

Base Score

5.0

Exploitability

0.7

Impact

4.2

Vector string

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

Attack Vector Network

Attack Complexity High

Privileges Required High

User Interaction None

Scope Unchanged

Confidentiality None

Integrity Low

Availability High

Threat Intelligence

EPSS Exploit Probability

3.2% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

References 1

github.com https://github.com/smallstep/certificates/security/advisories/GHSA-j7c9-79x7-8hpr

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.