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CVE-2025-66406

🗓️ 03 Dec 2025 19:13:48Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 35 Views

Improper authorization check allows SSH certificate revocation in deployments using SSHPOP; fixed in Step CA 0.29.0.

Related
Affected
Refs
Social
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2025-66406
3 Dec 202519:13
–alpinelinux
cgr
Chainguard
CVE-2025-66406 vulnerabilities
5 Dec 202519:17
–cgr
cnnvd
CNNVD
Smallstep step-ca security vulnerability
3 Dec 202500:00
–cnnvd
cvelist
Cvelist
CVE-2025-66406 Improper Authorization Check for SSH Certificate Revocation
3 Dec 202519:13
–cvelist
euvd
EUVD
EUVD-2025-201014
3 Dec 202519:13
–euvd
github
Github Security Blog
step-ca Has Improper Authorization Check for SSH Certificate Revocation
3 Dec 202516:27
–github
mend
Mend
CVE-2025-66406
3 Dec 202519:13
–mend
nvd
NVD
CVE-2025-66406
3 Dec 202520:16
–nvd
osv_cga
osv_cga
CGA-5RGG-CV5P-M845
5 Dec 202509:59
–osv_cga
osv_cga
osv_cga
CGA-F8J4-968W-VV37
4 Dec 202519:20
–osv_cga
Rows per page
[
  {
    "vendor": "smallstep",
    "product": "certificates",
    "versions": [
      {
        "version": "< 0.29.0",
        "status": "affected"
      }
    ]
  }
]

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18 Oct 2026 17:10Current
8.2High risk
Vulners AI Score8.2
CVSS 3.15
EPSS0.00151
SSVC
35