Serial number: AV26-346
Date: April 13, 2026
On April 13, 2026, ABB published security advisories to address vulnerabilities in the following product:
- ABB CI868 AC800M product line (System 800xA) for IEC 61850 – multiple firmware versions
- ABB CI850 Symphony Plus SD Series product line for IEC 61850 – multiple firmware versions
- ABB PM 877 Symphony Plus MR (Melody Rack) product line for IEC 61850 – firmware version 3.10 to 3.52
- ABB S+ Operations using IEC 61850 – multiple versions
- ABB Ability Symphony Plus – multiple versions
The Cyber Centre encourages users and administrators to review the provided web links and perform the suggested mitigations.
