CVE-2025-12150

LOW

Keycloak < 26.4.4 - Improper Verification of Cryptographic Signature via WebAuthn Attestation Bypass

Title source: llm
STIX 2.1

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.

References (7)

Core 7
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:21370
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:21371
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:22088
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:22089
Vendor Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2025-12150
Vendor Advisory issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2406192

Scores

CVSS v3 3.1
EPSS 0.0020
EPSS Percentile 10.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-347
Status published
Products (4)
org.keycloak/keycloak-services 0 - 26.4.4Maven
redhat/build_of_keycloak
redhat/build_of_keycloak < 26.4.4
redhat/keycloak 24.0.2
Published Feb 27, 2026
Tracked Since Feb 27, 2026