What’s Vulnerable › Vulnerabilities

CVE-2021-22284: SECURITY - OPC Server for AC 800M - Remote Code Execution Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-04 · updated 2026-06-17
• Weakness: CWE-732

Description

Incorrect Permission Assignment for Critical Resource vulnerability in OPC Server for AC 800M allows an attacker to execute arbitrary code in the node running the AC800M OPC Server.

Affected products

• ABB OPC Server for AC 800M: from 5.1.0-0 before 6.0.0-4 — fixed in 6.0.0-4

How to fix

Upgrade to a fixed version: ABB OPC Server for AC 800M 6.0.0-4. Check the vendor advisory for mitigations.

References

• https://search.abb.com/library/Download.aspx?DocumentID=7PAA000908&LanguageCode=en&DocumentPartId=&Action=Launch
• https://search.abb.com/library/Download.aspx?DocumentID=7PAA000908&LanguageCode=en&DocumentPartId=&Action=Launch

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