7.5

CVE-2021-3632: redhat keycloak Improper Authentication

CVSS: 7.5v3.1HighModified
AliasesGHSA-qpq9-jpv4-6gwr
Published 26-08-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-3632 is a high (CVSS 7.5) Improper Authentication vulnerability in redhat keycloak. EPSS estimates a 1.13% chance of exploitation in the next 30 days, higher than 65.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3
RHSA-2021:3527RHSA-2021:3528RHSA-2021:3529

Timeline

  1. 26-08-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.13%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.13% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.13%

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

Redhat2 products
Org.keycloak1 product
  • keycloak-core< 15.1.0

2 vendors · 3 products

References

7 links