CVE-2012-1818: An unspecified ActiveX control in Emerson DeltaV and DeltaV Workstations 9.3.1, 10.3.1, 11.3, and 11.3.1 an...

Security readout for executives and security teams

This CVE concerns Emerson DeltaV control-system workstations. A vulnerable ActiveX component could let a remote attacker overwrite arbitrary files through unspecified vectors. The public record does not provide CVSS, patch details, or confirmed active exploitation, but the affected systems are operational technology assets where file overwrite can create serious reliability and safety risk. Exposure is most likely where affected DeltaV engineering or operator workstations retain the listed versions and can process untrusted ActiveX content or be reached from less trusted networks. Internet exposure is not established by the provided sources. Treat as a high-priority OT exposure review, not a panic event. The affected products support industrial control environments, but the evidence bundle lacks active exploitation and fix details. Focus on inventory, vendor guidance, and network containment. Mitigation focus: Inventory DeltaV and ProEssentials versions against the affected list.; Check Emerson and ICS-CERT guidance for supported fixes or mitigations.; Restrict untrusted network and web content access from DeltaV workstations..

Prepared

Jun 24, 2026, 12:34 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.