Vulnerability in Keycloak
CVE-2025-12150
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (9.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Keycloak — versions 0
- Red Hat Build Of Keycloak 26.2 — versions 26.2.11-1, 26.2-12
- Red Hat Build Of Keycloak 26.2.11
- Red Hat Build Of Keycloak 26.4 — versions 26.4.4-1, 26.4-3
- Red Hat Build Of Keycloak 26.4.4
- Red Hat Build Of Keycloak
- Red Hat Keycloak — versions 24.0.2
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2025:21370 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2025:21371 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2025:22088 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2025:22089 (vendor-advisory, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2025-12150 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking)
- github.com/keycloak/keycloak/issues/43723 (Issue Tracking)
Frequently asked questions
- What is CVE-2025-12150?
- CVE-2025-12150 is a low-severity vulnerability in Keycloak, classified under Improper Verification of Cryptographic Signature. CVSS score: 3.1/10. Published 2026-02-27.
- How severe is CVE-2025-12150?
- Low severity. CVSS v3 base score is 3.1 out of 10.