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    Dashboard / CVE / CVE-2021-37185

    CVE-2021-37185

    A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.

    Published:Feb 9, 2022
    Last Modified:Apr 18, 2025
    EPS:Feb 9, 2022
    EPSS Score:0.00702
    CVSS Score:7.5

    Affected Products

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    Simatic Drive Controller Cpu 1504d Tf
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    Simatic Drive Controller Cpu 1504d Tf Firmware
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    Simatic Drive Controller Cpu 1507d Tf
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    Simatic Drive Controller Cpu 1507d Tf Firmware
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    Simatic Et 200sp Open Controller Cpu 1515sp Pc2
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    Simatic Et 200sp Open Controller Cpu 1515sp Pc2 Firmware
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    Simatic S7-1200 Cpu 1211c
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    Simatic S7-1200 Cpu 1211c Firmware
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    Simatic S7-1200 Cpu 1212c
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    Simatic S7-1200 Cpu 1212c Firmware
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    Simatic S7-1200 Cpu 1212fc
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    Simatic S7-1200 Cpu 1212fc Firmware
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    Simatic S7-1200 Cpu 1214c
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    Simatic S7-1200 Cpu 1214c Firmware
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    Simatic S7-1200 Cpu 1214fc
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    Simatic S7-1200 Cpu 1214fc Firmware
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    Simatic S7-1200 Cpu 1215c
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    Simatic S7-1200 Cpu 1215c Firmware
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    Simatic S7-1200 Cpu 1215fc
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    Simatic S7-1200 Cpu 1215fc Firmware
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    Simatic S7-1200 Cpu 1217c
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    Simatic S7-1200 Cpu 1217c Firmware
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    Simatic S7-1500 Cpu 1510sp
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    Simatic S7-1500 Cpu 1510sp-1
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    Simatic S7-1500 Cpu 1510sp-1 Firmware
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    Simatic S7-1500 Cpu 1510sp Firmware
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    Simatic S7-1500 Cpu 1511-1
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    Simatic S7-1500 Cpu 1511-1 Firmware
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    Simatic S7-1500 Cpu 1511c-1
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    Simatic S7-1500 Cpu 1511c-1 Firmware
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    Simatic S7-1500 Cpu 1511f-1
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    Simatic S7-1500 Cpu 1511f-1 Firmware
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    Simatic S7-1500 Cpu 1511t-1
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    Simatic S7-1500 Cpu 1511t-1 Firmware
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    Simatic S7-1500 Cpu 1511tf-1
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    Simatic S7-1500 Cpu 1511tf-1 Firmware
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    Simatic S7-1500 Cpu 1512c-1
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    Simatic S7-1500 Cpu 1512c-1 Firmware
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    Simatic S7-1500 Cpu 1512sp-1
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    Simatic S7-1500 Cpu 1512sp-1 Firmware
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    Simatic S7-1500 Cpu 1512spf-1
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    Simatic S7-1500 Cpu 1512spf-1 Firmware
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    Simatic S7-1500 Cpu 1513-1
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    Simatic S7-1500 Cpu 1513-1 Firmware
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    Simatic S7-1500 Cpu 1513f-1
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    Simatic S7-1500 Cpu 1513f-1 Firmware
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    Simatic S7-1500 Cpu 1513r-1
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    Simatic S7-1500 Cpu 1513r-1 Firmware
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    Simatic S7-1500 Cpu 1515-2
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    Simatic S7-1500 Cpu 1515-2 Firmware
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    Simatic S7-1500 Cpu 1515f-2
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    Simatic S7-1500 Cpu 1515f-2 Firmware
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    Simatic S7-1500 Cpu 1515r-2
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    Simatic S7-1500 Cpu 1515r-2 Firmware
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    Simatic S7-1500 Cpu 1515t-2
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    Simatic S7-1500 Cpu 1515t-2 Firmware
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    Simatic S7-1500 Cpu 1515tf-2
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    Simatic S7-1500 Cpu 1515tf-2 Firmware
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    Simatic S7-1500 Cpu 1516-3
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    Simatic S7-1500 Cpu 1516-3 Firmware
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    Simatic S7-1500 Cpu 1516f-3
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    Simatic S7-1500 Cpu 1516f-3 Firmware
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    Simatic S7-1500 Cpu 1516pro-2
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    Simatic S7-1500 Cpu 1516pro-2 Firmware
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    Simatic S7-1500 Cpu 1516pro F
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    Simatic S7-1500 Cpu 1516pro F Firmware
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    Simatic S7-1500 Cpu 1516t-3
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    Simatic S7-1500 Cpu 1516t-3 Firmware
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    Simatic S7-1500 Cpu 1516tf-3
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    Simatic S7-1500 Cpu 1516tf-3 Firmware
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    Simatic S7-1500 Cpu 1517-3
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    Simatic S7-1500 Cpu 1517-3 Firmware
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    Simatic S7-1500 Cpu 1517f-3
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    Simatic S7-1500 Cpu 1517f-3 Firmware
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    Simatic S7-1500 Cpu 1517tf-3
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    Simatic S7-1500 Cpu 1517tf-3 Firmware
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    Simatic S7-1500 Cpu 1518-4
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    Simatic S7-1500 Cpu 1518-4 Firmware
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    Simatic S7-1500 Cpu 1518f-4
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    Simatic S7-1500 Cpu 1518f-4 Firmware
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    Simatic S7-1500 Cpu 1518hf-4
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    Simatic S7-1500 Cpu 1518hf-4 Firmware
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    Simatic S7-1500 Cpu 1518t-4
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    Simatic S7-1500 Cpu 1518t-4 Firmware
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    Simatic S7-1500 Cpu 1518tf-4
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    Simatic S7-1500 Cpu 1518tf-4 Firmware
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    Simatic S7-1500 Cpu Cpu 1513pro-2
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    Simatic S7-1500 Cpu Cpu 1513pro-2 Firmware
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    Simatic S7-1500 Cpu Cpu 1513prof-2
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    Simatic S7-1500 Cpu Cpu 1513prof-2 Firmware
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    Simatic S7-1500 Software Controller
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    Simatic S7-plcsim Advanced
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    Simatic S7-plcsim Advanced Firmware
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    Tim 1531 Irc
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    Tim 1531 Irc Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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