CVE-2022-33318 Deserialization in GENESIS32

Critical 9.8 Published 20 Jul 2022 Updated 9 Jan 2026

Remote unauthenticated attackers can execute arbitrary code via specially crafted packets in Mitsubishi Electric SCADA and HMI products.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-33318?

CVE-2022-33318 is a critical unsafe deserialization vulnerability in Mitsubishi Electric GENESIS32, published on 20 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Deserialization of Untrusted Data vulnerability in Mitsubishi Electric GENESIS64 versions 10.97 to 10.97.1, Mitsubishi Electric Iconics Digital Solutions GENESIS64 versions 10.97 to 10.97.1, Mitsubishi Electric ICONICS Suite versions 10.97 to 10.97.1, Mitsubishi Electric Iconics Digital Solutions ICONICS Suite versions 10.97 to 10.97.1, Mitsubishi Electric GENESIS32 versions 9.7 and prior, Mitsubishi Electric Iconics Digital Solutions GENESIS32 versions 9.7 and prior, and Mitsubishi Electric MC Works64 versions 4.04E and prior allows a remote unauthenticated attacker to execute an arbitrary malicious code by sending specially crafted packets to the GENESIS64, ICONICS Suite, GENESIS32, or MC Works64 server.

Weakness: CWE-502

Which versions are affected by CVE-2022-33318?

It affects 2 products.

Products include Iconics Genesis64, Mitsubishielectric Mc Works64.

How do I fix CVE-2022-33318?

No fix has been published for CVE-2022-33318 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2022-33318 being exploited?

There is no known exploitation of CVE-2022-33318 in the wild and no public exploit code.

Sources

Also known as GHSA-3jhc-73h5-x7fx.