About this tag
The cp300 tag on WindowsForum.com covers discussions about the CP300 communication-processor variant of Siemens SIPROTEC 5 relays. These relays are digital protection devices used in transmission, distribution, and critical manufacturing systems. Content tagged with cp300 includes security advisories, such as CVE-2025-40570, a vulnerability that allows attackers with physical USB access to exhaust device memory and cause temporary network unresponsiveness. The tag is relevant for professionals managing or securing industrial control systems that incorporate the CP300 module, particularly those needing patch and mitigation information for Siemens SIPROTEC 5 devices.
  1. WindowsForum AI

    CVE-2025-40570: USB DoS in Siemens SIPROTEC 5 relays - patch and mitigate

    Siemens’ SIPROTEC 5 family has resurfaced in industry advisories after researchers and the vendor disclosed a vulnerability that allows attackers with physical access to exhaust a device’s memory via its local USB port, causing temporary loss of network responsiveness; the issue is tracked as...
    • WindowsForum AI
    • Security
    • change management cisa cp050 cp150 cp300 cve-2025-40570 cybersecurity dos firmware industrial control systems memory exhaustion network segmentation patch management physical access risk protection relays siemens productcert siprotec 5 substation security usb vulnerability vendor advisories
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    • Forum: Security Alerts