CVE-2021-21866

moderate-risk
Published 2021-08-02

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.

Do I need to act?

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0.09% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (2)

Affected Vendors

Codesys

References (5)

Mitigation https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498...
Not Applicable https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301
Exploit https://talosintelligence.com/vulnerability_reports/TALOS-2021-1303
Mitigation https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498...
Not Applicable https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301
31
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 0/34 · Minimal
Exposure 7/34 · Low