CVE-2021-21866

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

A unsafe deserialization vulnerability exists in the ObjectManager.plugin ProfileInformation.ProfileData functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

Vendor	Product	Versions
n/a	CODESYS	CODESYS GmbH CODESYS Development System 3.5.16, CODESYS GmbH CODESYS Development System 3.5.17

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=Mitigation, Patch, Vendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301Not Applicable, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1303Exploit, Third Party Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=Mitigation, Patch, Vendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301Not Applicable, Third Party Advisory

Timeline

Published: Aug 2, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

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