Deserialization of Untrusted Data in CODESYS Development System - CVE-2021-21866
Published: July 27, 2021
Vulnerability identifier: #VU55322
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21866
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in the ObjectManager.plugin ProfileInformation.ProfileData functionality. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
CODESYS Development System
How to mitigate CVE-2021-21866
Install updates from vendor's website.
CODESYS Development System - update to 3.5.17.10