3.1

CVE-2025-12150: keycloak

CVSS: 3.1v3.1LowAnalyzed
AliasesCGA-3mqx-9p72-925qCGA-887g-rq87-xm36CGA-m47v-6vm3-mh48
Published 27-02-2026Last modified 10-08-2026
Open JSON

Vulnerability summary

CVE-2025-12150 is a low (CVSS 3.1) vulnerability in keycloak. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.4% of scored vulnerabilities.

Overall risk
12/100
0100
Low · default modelHow is this calculated?
CVSS score
3.1/10
010
Low · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-02-2026
    PublishedVulnerability first disclosed.
  2. 10-08-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.01 pp

From 0.20% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard2 products
  • keycloak-26.3-iamguarded-compatAll versions (No fix recorded)
  • keycloak-fips-26.3-iamguarded-fipsAll versions (No fix recorded)
Redhat2 products
Keycloak1 product
Org.keycloak1 product
  • keycloak-services< 26.4.4

4 vendors · 6 products

References

14 links
Show all 14 references