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Case File

CVE-2021-4133

HIGH · CVSS 8.8 EPSS 1.35% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-01-25 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-4133
Severity
HIGH
CVSS
8.8
EPSS
1.35%

Original NVD Description

A flaw was found in Keycloak in versions from 12.0.0 and before 15.1.1 which allows an attacker with any existing user account to create new default user accounts via the administrative REST API even when new user registration is disabled.