AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-4238

CRITICAL · CVSS 9.1 EPSS 1.32% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-12-27 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗

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

CVE
CVE-2021-4238
Severity
CRITICAL
CVSS
9.1
EPSS
1.32%

Original NVD Description

Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.