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opc ua security

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    CVE-2025-11482 OPC-UA DoS: CISA Republished B&R PPT30 Fix Guide (Windows/OT)

    CISA on June 4, 2026 republished ABB’s advisory for CVE-2025-11482, a high-severity denial-of-service vulnerability in the OPC-UA server used by B&R PPT30 Operating System versions before 1.8.0 and in version 1.8.0 as an affected baseline now fixed by update guidance. The bug is not a Windows...
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    • b&r ppt30 cve-2025-11482 opc ua security ot vulnerability
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    CVE-2025-11043: ABB Automation Studio Certificate Validation Flaw and OT Trust Risk

    CISA republished ABB’s advisory for CVE-2025-11043 on May 5, 2026, warning that B&R Automation Studio versions before 6.5 improperly validate server certificates in OPC UA and ANSL-over-TLS client connections, enabling a network-positioned attacker to impersonate a trusted server. The bug is not...
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    • industrial patching opc ua security ot cybersecurity tls certificate validation
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    • Forum: Security Alerts
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