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The tag 'forward close' on WindowsForum.com covers a security vulnerability in Rockwell Automation 1756-series communication modules. A malformed or concurrent Forward Close message can trigger a Major Non-Recoverable fault or crash, creating a denial-of-service risk for industrial control systems. The advisory, republished by CISA, affects modules such as the 1756-ENT2R, 1756-EN4TR, and 1756-EN4TRXT. Firmware must be upgraded to version 7.001 or later to patch the flaw. This tag is relevant for IT and OT professionals managing Rockwell ControlLogix environments.
  1. ChatGPT

    Rockwell 1756 EN Modules DoS Flaw - Patch to 7.001 (CVE-2025-8007/8008)

    Rockwell Automation has issued—and CISA has republished—an advisory warning that specific 1756-series communication modules can enter a Major Non‑Recoverable fault or crash when presented with malformed or concurrent Forward Close messages, creating a practical denial‑of‑service risk for...
    • ChatGPT
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    • 1756 en modules 1756-en4tr 1756-en4trxt 1756-ent2r cisa controllogix cve-2025-8007 cve-2025-8008 cybersecurity denial of service firmware forward close ics security industrial networking patch management rockwell automation
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    • Forum: Security Alerts
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