CVE-2025-12150

Summary

A flaw was found in Keycloak’s WebAuthn registration component. This vulnerability allows an attacker to bypass the configured attestation policy and register untrusted or forged authenticators via submission of an attestation object with fmt: "none", even when the realm is configured to require direct attestation. This can lead to weakened authentication integrity and unauthorized authenticator registration.

Affected Software

VendorProductVersion RangeStatus
Keycloakkeycloak0 < 26.4.4affected
Red HatRed Hat build of Keycloak 26.226.2.11-1 < *unaffected
Red HatRed Hat build of Keycloak 26.226.2-12 < *unaffected
Red HatRed Hat build of Keycloak 26.226.2-12 < *unaffected
Red HatRed Hat build of Keycloak 26.426.4.4-1 < *unaffected
Red HatRed Hat build of Keycloak 26.426.4-3 < *unaffected
Red HatRed Hat build of Keycloak 26.426.4-3 < *unaffected

Weaknesses

  • CWE-347: Improper Verification of Cryptographic Signature

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References