industrial plc security

  1. ABB AC500 V3 Vulnerabilities: Patch to Firmware 3.9.0 via Automation Builder 2.9.0

    ABB’s AC500 V3 programmable logic controller line is affected by three remotely reachable vulnerabilities disclosed by ABB on February 24, 2026, and republished by CISA on May 12, 2026, with fixes available in AC500 V3 firmware 3.9.0 through Automation Builder 2.9.0. The headline is not that...
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