CVE-2021-21866
First published: Mon Aug 02 2021(Updated: )
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.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| CODESYS Development System | =3.5.16.0 | |
| CODESYS Development System | =3.5.17.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-21866?
CVE-2021-21866 is an unsafe deserialization vulnerability in the ObjectManager.plugin ProfileInformation.ProfileData functionality of CODESYS Development System 3.5.16 and 3.5.17.
How does CVE-2021-21866 affect CODESYS Development System?
CVE-2021-21866 allows an attacker to execute arbitrary commands by providing a specially crafted file.
What is the severity of CVE-2021-21866?
CVE-2021-21866 has a severity rating of 7.8 (high).
How can I fix CVE-2021-21866?
To fix CVE-2021-21866, it is recommended to update to a patched version of CODESYS Development System (3.5.18 or later) when it becomes available, or apply any recommended security patches provided by the vendor.
What is the Common Weakness Enumeration (CWE) ID for CVE-2021-21866?
CVE-2021-21866 is associated with CWE-502 (Deserialization of Untrusted Data).
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- version/codesys development system/3.5.16.0
- version/codesys development system/3.5.17.0