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CVE-2025-12150

Org.keycloak/keycloak-services: webauthn attestation statement verification bypass

Published: Feb 27, 2026Updated: Mar 5, 2026 Sources: CVE List NVD GHSACWE-347
NVD MITRE
3.1CVSSLOW
EPSS Score
0.2%
Top 90.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-347

Affected Products

keycloakKeycloak
On-prem
Security Products / identity-access-mgmt
Red Hat build of Keycloak 26.2Red Hat
On-prem
Operating Systems / linux-distro
Red Hat build of Keycloak 26.2.11Red Hat
On-prem
Operating Systems / linux-distro
Red Hat build of Keycloak 26.4Red Hat
On-premWeb App
Web & CMS Plugins
Red Hat build of Keycloak 26.4.4Red Hat
On-prem
Operating Systems / linux-distro
keycloakoss-projectSecurity Productsaka keycloak-nodejs-auth-utils
red hatcommercialUSOperating Systemsaka red hat
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2025:21370
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:21371
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:22088
access.redhat.com
and 8 more references View all →

Timeline

Published
Feb 27, 2026
Last Updated
Mar 5, 2026

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