CVE-2021-21865

Name of the Vulnerable Software and Affected Versions CODESYS Development System version 3.5.16

Description A unsafe deserialization vulnerability exists in the PackageManagement.plugin ExtensionMethods.Clone() functionality. This vulnerability can be triggered by a specially crafted file, leading to arbitrary command execution. An attacker can provide a malicious file to exploit this issue.

Recommendations For version 3.5.16, consider disabling the ExtensionMethods.Clone() function as a temporary workaround until a patch is available. Restrict access to the PackageManagement.plugin to minimize the risk of exploitation. Avoid using malicious files that can trigger this vulnerability. At the moment, there is no information about a newer version that contains a fix for this vulnerability.