CVE-2022-33316: 
Mitsubishi Electric ICONICS GENESIS64 vulnerability analysis and mitigation

Deserialization of Untrusted Data vulnerability (CVE-2022-33316) affects ICONICS GENESIS64 versions 10.97.1 and prior and Mitsubishi Electric MC Works64 versions 4.04E (10.95.210.01) and prior. The vulnerability allows an unauthenticated attacker to execute arbitrary malicious code by leading a user to load a monitoring screen file containing malicious XAML codes (CISA Advisory, NVD).

The vulnerability exists within the parsing of GDFX files in GENESIS64. The specific flaw results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (High) with the vector string: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating local attack vector, low attack complexity, no privileges required, and user interaction required (ZDI Advisory, NVD).

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code in the context of the current process, potentially leading to complete system compromise with the same privileges as the affected application (ZDI Advisory, CISA Advisory).

ICONICS and Mitsubishi Electric have released security updates to address this vulnerability. Users are recommended to update to version 10.97.2 or later. Additional mitigations include using firewalls, isolating control system networks from business networks, restricting access to TCP ports, and utilizing secure remote access methods such as VPNs (CISA Advisory).