5.4

CVE-2025-3910: redhat build_of_keycloak Improper Authentication

CVSS: 5.4v3.1MediumAnalyzed
AliasesGHSA-5jfq-x6xp-7rw2BIT-keycloak-2025-3910
Published 29-04-2025Last modified 21-09-2026
Open JSON

Vulnerability summary

CVE-2025-3910 is a medium (CVSS 5.4) Improper Authentication vulnerability in redhat build_of_keycloak. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 37% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.44%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-FPXG-M44C-89VP

Timeline

  1. 29-04-2025
    PublishedVulnerability first disclosed.
  2. 21-09-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in Keycloak. The org.keycloak.authorization package may be vulnerable to circumventing required actions, allowing users to circumvent requirements such as setting up two-factor authentication.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

+0.02 pp

From 0.42% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.44%

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

Org.keycloak1 product
  • keycloak-services< 26.2.2
Redhat1 product

2 vendors · 2 products

References

8 links