What’s Vulnerable › Vulnerabilities

CVE-2021-42561

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 19.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-12 · updated 2026-06-17
• Weakness: CWE-74

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.

Affected products

• MITRE Caldera: through 2.8.1

References

• https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20Caldera
• https://github.com/mitre/caldera/releases
• https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20Caldera
• https://github.com/mitre/caldera/releases

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