SECURITY - OPC Server for AC 800M - Remote Code Execution Vulnerability
Priority MEDIUM 40CWE-732Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00831 57th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ABB | 800xA, Control Software for AC 800M OPC Server for AC 800M | up to 5.1.0-x; up to 5.1.1-x; 6.0.0-1; 6.0.0-2; 6.0.0-3 | — | No fix listed | CNA |
| ABB | Control Builder Safe, version 1.x OPC Server for AC 800M | 5.1.1-1 | — | No fix listed | CNA |
| ABB | Control Builder Safe, version 2.0 OPC Server for AC 800M | 6.0.0-1 | — | No fix listed | CNA |
| ABB | Compact Product Suite - Control and I/O OPC Server for AC 800M | up to 5.1.0-x; up to 5.1.1-x; up to 6.0.0-x | — | No fix listed | CNA |
- 800xA, Control Software for AC 800M OPC Server for AC 800M VendorABB Affected up to 5.1.0-x; up to 5.1.1-x; 6.0.0-1; 6.0.0-2; 6.0.0-3 Fixed in — No fix listed CNA
- Control Builder Safe, version 1.x OPC Server for AC 800M VendorABB Affected 5.1.1-1 Fixed in — No fix listed CNA
- Control Builder Safe, version 2.0 OPC Server for AC 800M VendorABB Affected 6.0.0-1 Fixed in — No fix listed CNA
- Compact Product Suite - Control and I/O OPC Server for AC 800M VendorABB Affected up to 5.1.0-x; up to 5.1.1-x; up to 6.0.0-x Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-22284
- 2026-10-03 Alias added: GHSA-xpp9-6v93-3xvq
References
Sources
- CVE-2021-22284 · CVE Program
- CVE-2021-22284 · NVD
- FIRST EPSS
- GHSA-xpp9-6v93-3xvq · GitHub Advisory Database · CC BY 4.0
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