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I. Basic Information for CVE-2025-66406
Vulnerability Information

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Vulnerability Title
Improper Authorization Check for SSH Certificate Revocation
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Smallstep step-ca 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Smallstep step-ca是美国Smallstep公司的一个面向DevOps的安全、自动化证书管理的在线证书颁发机构。 Smallstep step-ca 0.29.0之前版本存在安全漏洞,该漏洞源于SSH证书撤销授权检查不当,可能导致未授权访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
smallstepcertificates < 0.29.0 -
II. Public POCs for CVE-2025-66406
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III. Intelligence Information for CVE-2025-66406
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