AUGUST 4, 2026
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Case File

CVE-2021-42561

HIGH · CVSS 8.8 EPSS 19.57% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-01-12 · 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-2021-42561
Severity
HIGH
CVSS
8.8
EPSS
19.57%

Original NVD Description

An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python "os.system" function. This allows attackers to use shell metacharacters (e.g., backticks "``" or dollar parenthesis "$()" ) in order to escape the current command and execute arbitrary shell commands.