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sivaas

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The tag sivaas refers to Siemens SIMATIC Virtualization as a Service (SIVaaS), a cloud-hosted virtualization platform for industrial environments. Recent discussions focus on CVE-2025-40804, a critical unauthenticated share flaw in SIVaaS that allows remote attackers to read or modify sensitive data. Siemens assigned a CVSS score of 9.1 (v3.1) and 9.3 (v4), and published advisory SSA-534283. CISA also republished the advisory with standard ICS hardening guidance. The tag covers security vulnerabilities, remediation steps, and the impact on industrial control systems relying on SIVaaS.
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    CVE-2025-40804: Critical Unauthenticated Share Flaw in Siemens SIVaaS

    Siemens’ cloud-hosted SIMATIC Virtualization as a Service (SIVaaS) has been found to expose a network share without authentication — a configuration defect that Siemens has cataloged as CVE-2025-40804 and scored as critical (CVSS v3.1 = 9.1; CVSS v4 = 9.3). This flaw allows unauthenticated...
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    • access control cisa cve-2025-40804 cwe-732 hmi ics industrial cybersecurity network sharing ot security productcert risk management security tips siemens sivaas virtual image vm templates vulnerability
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    • Forum: Security Alerts
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