CVE-2022-33318Public exploitNetwork attack vector

Unauthenticated code execution via crafted OPC packets

Published Jul 20, 2022 · Updated Jan 9, 2026

Untrusted deserialization in Mitsubishi Electric SCADA servers allows remote attackers to execute code through crafted OPC DA packets. The GenBroker communication function accepts improperly validated packets from an external OPC DA server and deserializes their contents. No authentication or user interaction is required, and successful exploitation executes arbitrary code in the server process.

CVSS severity9.8
Critical
EPSS probability48.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Untrusted deserialization in Mitsubishi Electric SCADA servers allows remote attackers to execute code through crafted OPC DA packets. The GenBroker communication function accepts improperly validated packets from an external OPC DA server and deserializes their contents. No authentication or user interaction is required, and successful exploitation executes arbitrary code in the server process.

The record

CVE
CVE-2022-33318
Published
Jul 20, 2022
Updated
Jan 9, 2026
Vendor
Mitsubishi Electric Corporation
Product
GENESIS32
Classifications
CWE-502, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2022CVE publishedPublication date reported by the CVE source.
  2. Jan 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Versions 9.7 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mitsubishi Electric Corporation · GENESIS32version=Versions 9.7 and prior
Mitsubishi Electric Iconics Digital Solutions, Inc. · GENESIS32version=Versions 9.7 and prior
Mitsubishi Electric Iconics Digital Solutions, Inc. · ICONICS Suiteversion=Versions 10.97 to 10.97.1
Mitsubishi Electric Corporation · ICONICS Suiteversion=Versions 10.97 to 10.97.1
Mitsubishi Electric Iconics Digital Solutions, Inc. · GENESIS64version=Versions 10.97 to 10.97.1
Mitsubishi Electric Corporation · GENESIS64version=Versions 10.97 to 10.97.1
Mitsubishi Electric Corporation · MC Works64version=Versions 4.04E and prior

Published CVSS scores

9.8Mitsubishi Electric CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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