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    CVE-2021-31893

    A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). The affected software contains a buffer overflow vulnerability while handling certain files that could allow a local attacker to trigger a denial-of-service condition or potentially lead to remote code execution.

    Published:Jul 13, 2021
    Last Modified:Nov 21, 2024
    EPS:Jul 13, 2021
    EPSS Score:0.00132
    CVSS Score:7.8

    Affected Products

    Vendor
    Siemens
    Product
    Simatic Pcs
    Vendor
    Siemens
    Product
    Simatic Pcs Firmware
    Vendor
    Siemens
    Product
    Simatic Pdm
    Vendor
    Siemens
    Product
    Simatic Pdm Firmware
    Vendor
    Siemens
    Product
    Simatic Step 7
    Vendor
    Siemens
    Product
    Simatic Step 7 Firmware
    Vendor
    Siemens
    Product
    Sinamics Starter
    Vendor
    Siemens
    Product
    Sinamics Starter Firmware

    Exploits

    No exploit reference

    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