CVE-2025-12150
Keycloak REST Services has a WebAuthn Attestation Statement Verification Bypass
3.1
LOW
CVSS 3.1
EPSS 0.01%
Description
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.
How to fix CVE-2025-12150
To remediate CVE-2025-12150, upgrade the affected package to a fixed version below.
- —upgrade to 26.4.4 or later
Is CVE-2025-12150 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 26.4.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N |