CVE-2026-40097

A flaw was found in Step CA, an online certificate authority. A remote attacker can trigger a Denial of Service DoS by sending a specially crafted attestation key AK certificate with an empty Extended Key Usage EKU extension during Trusted Platform Module TPM device attestation. This causes an...

Step CA affected by an index out of bounds panic in TPM attestation EKU validation

Summary An attacker can trigger an index out-of-bounds panic in Step CA by sending a crafted attestation key AK certificate with an empty Extended Key Usage EKU extension during TPM device attestation. Details When processing a device-attest-01 ACME challenge using TPM attestation, Step CA...

CVE-2026-40097

Step CA is an online certificate authority for secure, automated certificate management for DevOps. From 0.24.0 to before 0.30.0-rc3, an attacker can trigger an index out-of-bounds panic in Step CA by sending a crafted attestation key AK certificate with an empty Extended Key Usage EKU extension...

CVE-2026-40097 Step CA affected by an index out of bounds panic in TPM attestation EKU validation

Step CA is an online certificate authority for secure, automated certificate management for DevOps. From 0.24.0 to before 0.30.0-rc3, an attacker can trigger an index out-of-bounds panic in Step CA by sending a crafted attestation key AK certificate with an empty Extended Key Usage EKU extension...

CVE-2026-30836

A flaw was found in Step CA, an online certificate authority. A remote attacker can exploit this vulnerability by sending an unauthenticated SCEP Simple Certificate Enrollment Protocol Update Request. This allows the attacker to issue unauthorized certificates, potentially leading to a compromise...

UBUNTU-CVE-2026-30836

Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0...

SUSE CVE-2025-44005

An attacker can bypass authorization checks and force a Step CA ACME or SCEP provisioner to create certificates without completing certain protocol authorization checks...

EUVD-2025-201012

An attacker can bypass authorization checks and force a Step CA ACME or SCEP provisioner to create certificates without completing certain protocol authorization checks...

CVE-2025-44005

An attacker can bypass authorization checks and force a Step CA ACME or SCEP provisioner to create certificates without completing certain protocol authorization checks...

CVE-2025-44005

An attacker can bypass authorization checks and force a Step CA ACME or SCEP provisioner to create certificates without completing certain protocol authorization checks...

SUSE CVE-2025-66406

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...

CVE-2025-66406

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...

GO-2025-4180 Step CA Has Authorization Bypass in ACME and SCEP Provisioners in github.com/smallstep/certificates

Step CA Has Authorization Bypass in ACME and SCEP Provisioners in github.com/smallstep/certificates...

CVE-2025-66406 Improper Authorization Check for SSH Certificate Revocation

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...

GHSA-H8CP-697H-8C8P Step CA Has Authorization Bypass in ACME and SCEP Provisioners

Summary A security fix is now available for Step CA that resolves a vulnerability affecting deployments configured with ACME and/or SCEP provisioners. All operators running these provisioners should upgrade to the latest release v0.29.0 immediately. The issue was discovered and disclosed by a...

PT-2025-49107

Name of the Vulnerable Software and Affected Versions Step CA affected versions not specified Description A critical issue in Step CA allows for unauthenticated bypass, enabling the issuance of fraudulent certificates. This compromises trust in potentially millions of sites. The issue allows...