Energy Client Patched May 2026

ICS-24-EP-892 (simulated) Affected product: GridLink Energy Client v3.2 to v3.8 Vulnerability type: Stack-based buffer overflow in the OPC DA (Data Access) protocol parser CVSS score: 9.8 (Critical) Impact: Remote unauthenticated attacker could crash the client or execute arbitrary code with SYSTEM privileges.

So next time you see the headline “Energy Client Patched Against Critical Flaw,” take a moment to appreciate the silent, coordinated effort of engineers who prevented yet another crisis—often without the public ever knowing there was a risk. Subscribe to CISA’s ICS-CERT alerts and your regional ISO’s threat feed. Set a calendar reminder for the second Tuesday of each month to review all outstanding energy client patches. Your grid depends on it. energy client patched

Security researchers observed a watering hole attack targeting utility engineers’ forums. Clicking a maliciously crafted .opc file would trigger the overflow. Set a calendar reminder for the second Tuesday