CVE-2025-12150

LOW
2026-02-27 [email protected] GHSA-7g5x-9c4v-4w5r
3.1
CVSS 3.1

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

3
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 27, 2026 - 09:16 nvd
LOW 3.1

Tags

Authentication Bypass

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.

Analysis

A flaw was found in Keycloak’s WebAuthn registration component. [CVSS 3.1 LOW]

Technical Context

Classified as CWE-347 (Improper Verification of Cryptographic Signature). Affects Build Of Keycloak. 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 Products

Vendor: Redhat. Product: Build Of Keycloak.

Remediation

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Priority Score

16
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +16
POC: 0

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CVE-2025-12150 vulnerability details – vuln.today
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