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    CVE-2025-40566

    A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions < V4.1 Update 3), SIMATIC PCS neo V5.0 (All versions < V5.0 Update 1). Affected products do not correctly invalidate user sessions upon user logout. This could allow a remote unauthenticated attacker, who has obtained the session token by other means, to re-use a legitimate user's session even after logout.

    Published:May 13, 2025
    Last Modified:Aug 22, 2025
    EPS:May 13, 2025
    EPSS Score:0.00094
    CVSS Score:8.8

    Affected Products

    Vendor
    Siemens
    Product
    Simatic Pcs Neo

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-613 Insufficient Session Expiration

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-40798 (CVSS 8.7) — A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions…
    CVE-2025-40797 (CVSS 8.7) — A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions…
    CVE-2025-40796 (CVSS 8.7) — A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions…
    CVE-2025-40795 (CVSS 9.3) — A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions…
    CVE-2024-54678 (CVSS 8.6) — A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions…
    CVE-2025-30176 (CVSS 8.7) — A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions…
    CVE-2025-30175 (CVSS 8.7) — A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions…
    CVE-2024-33698 (CVSS 9.3) — A vulnerability has been identified in Opcenter Quality (All versions < V2406), Opcenter RDnL (All versions < …
    CVE-2022-45147 (CVSS 8.5) — A vulnerability has been identified in SIMATIC PCS neo V4.0 (All versions), SIMATIC STEP 7 V16 (All versions),…
    CVE-2023-46285 (CVSS 7.5) — A vulnerability has been identified in Opcenter Execution Foundation (All versions < V2407), Opcenter Quality …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High