{"id":"CVE-2025-44005","aliases":["GHSA-h8cp-697h-8c8p","GO-2025-4180"],"url":"https://o3.security/vulnerability/CVE-2025-44005","summary":"Step CA Has Authorization Bypass in ACME and SCEP Provisioners","details":"## Summary\n\nA security fix is now available for Step CA that resolves a vulnerability affecting deployments configured with ACME and/or SCEP provisioners.\nAll operators running these provisioners should upgrade to the latest release (`v0.29.0`) immediately.\n\nThe issue was discovered and disclosed by a research team during a security review. There is no evidence of active exploitation.\n\nTo limit exploitation risk during a coordinated disclosure window, we are withholding detailed technical information for now. A full write-up will be published in several weeks.\n\n---\n\n## Embargo List\n\nIf your organization runs Step CA in production and would like advance, embargoed notification of future security updates, visit https://u.step.sm/disclosure to request inclusion on our embargo list.\n\n---\n\n## Acknowledgements\n\nThis issue was identified and reported by Stephen Kubik of the Cisco Advanced Security Initiatives Group (ASIG)\n\n---\n\nStay safe, and thank you for helping us keep the ecosystem secure.","published":"2025-12-17T15:16:16.495Z","modified":"2026-08-12T03:51:23.265322401Z","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"},"epss":{"score":0.09091,"percentile":0.95014,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/smallstep/certificates","fixedVersion":"0.29.0"}],"fix":{"url":"https://github.com/smallstep/certificates/commit/1011f5f5408b470a636f583bf74c0d7bbaf75d72","label":"smallstep/certificates@1011f5f"},"references":[{"type":"WEB","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2025-2242"},{"type":"WEB","url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2242"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/44xxx/CVE-2025-44005.json"},{"type":"ADVISORY","url":"https://github.com/smallstep/certificates/security/advisories/GHSA-h8cp-697h-8c8p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-44005"},{"type":"WEB","url":"https://github.com/smallstep/certificates/commit/1011f5f5408b470a636f583bf74c0d7bbaf75d72"},{"type":"PACKAGE","url":"https://github.com/smallstep/certificates"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:23.265322401Z"}}