OCTOBER 2, 2026
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Case File

CVE-2021-21479

CRITICAL · CVSS 9.1 EPSS 10.12% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-02-09 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. It affects Java. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 10.1% probability of exploitation in the next 30 days.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2021-21479
Severity
CRITICAL
CVSS
9.1
EPSS
10.12%
Java

Original NVD Description

In SCIMono before 0.0.19, it is possible for an attacker to inject and execute java expression compromising the availability and integrity of the system.

Related CVEs

Other vulnerabilities affecting the same vendor(s)