CVE Feed

    Dashboard / CVE / CVE-2021-44694

    CVE-2021-44694

    Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device.

    Published:Dec 13, 2022
    Last Modified:Apr 21, 2025
    EPS:Dec 13, 2022
    EPSS Score:0.00089
    CVSS Score:5.5

    Affected Products

    Vendor
    Siemens
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    Simatic Et 200 Sp Open Controller Cpu 1515sp Pc
    Vendor
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    Simatic Et 200 Sp Open Controller Cpu 1515sp Pc 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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    Siemens
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    Simatic S7-1200 Cpu 1214 Fc
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    Siemens
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    Simatic S7-1200 Cpu 1214 Fc 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 1215 Fc
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    Simatic S7-1200 Cpu 1215 Fc 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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    Siemens
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    Simatic S7-1200 Cpu 1217c
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    Simatic S7-1200 Cpu 1217c Firmware
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    Simatic S7-1200 Cpu 12 1211c
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    Simatic S7-1200 Cpu 12 1211c Firmware
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    Simatic S7-1200 Cpu 12 1212c
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    Simatic S7-1200 Cpu 12 1212c Firmware
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    Simatic S7-1200 Cpu 12 1212fc
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    Simatic S7-1200 Cpu 12 1212fc Firmware
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    Simatic S7-1200 Cpu 12 1214c
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    Simatic S7-1200 Cpu 12 1214c Firmware
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    Simatic S7-1200 Cpu 12 1214fc
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    Simatic S7-1200 Cpu 12 1214fc Firmware
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    Simatic S7-1200 Cpu 12 1215c
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    Simatic S7-1200 Cpu 12 1215c Firmware
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    Simatic S7-1200 Cpu 12 1215fc
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    Simatic S7-1200 Cpu 12 1215fc Firmware
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    Simatic S7-1200 Cpu 12 1217c
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    Simatic S7-1200 Cpu 12 1217c Firmware
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    Simatic S7-1500 Cpu 1507s
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    Simatic S7-1500 Cpu 1507s F
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    Simatic S7-1500 Cpu 1507s F Firmware
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    Simatic S7-1500 Cpu 1507s Firmware
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    Simatic S7-1500 Cpu 1508s
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    Simatic S7-1500 Cpu 1508s F
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    Simatic S7-1500 Cpu 1508s F Firmware
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    Simatic S7-1500 Cpu 1508s 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 1511-1 Pn
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    Simatic S7-1500 Cpu 1511-1 Pn Firmware
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    Simatic S7-1500 Cpu 1511c
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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 1511c 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 1511f-1 Pn
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    Simatic S7-1500 Cpu 1511f-1 Pn 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
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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 1512c 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 1513-1 Pn
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    Simatic S7-1500 Cpu 1513-1 Pn 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 1513f-1 Pn
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    Simatic S7-1500 Cpu 1513f-1 Pn 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 1515-2 Pn
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    Simatic S7-1500 Cpu 1515-2 Pn Firmware
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    Simatic S7-1500 Cpu 151511c-1
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    Simatic S7-1500 Cpu 151511c-1 Firmware
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    Simatic S7-1500 Cpu 151511f-1
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    Simatic S7-1500 Cpu 151511f-1 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 1515f-2 Pn
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    Simatic S7-1500 Cpu 1515f-2 Pn 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 Dp
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    Simatic S7-1500 Cpu 1516-3 Dp Firmware
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    Simatic S7-1500 Cpu 1516-3 Firmware
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    Simatic S7-1500 Cpu 1516-3 Pn
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    Simatic S7-1500 Cpu 1516-3 Pn\/dp
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    Simatic S7-1500 Cpu 1516-3 Pn\/dp Firmware
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    Simatic S7-1500 Cpu 1516-3 Pn 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 1516f-3 Pn\/dp
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    Simatic S7-1500 Cpu 1516f-3 Pn\/dp 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 Dp
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    Simatic S7-1500 Cpu 1517-3 Dp Firmware
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    Simatic S7-1500 Cpu 1517-3 Firmware
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    Simatic S7-1500 Cpu 1517-3 Pn
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    Simatic S7-1500 Cpu 1517-3 Pn\/dp
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    Simatic S7-1500 Cpu 1517-3 Pn\/dp Firmware
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    Simatic S7-1500 Cpu 1517-3 Pn 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 1517f-3 Pn\/dp
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    Simatic S7-1500 Cpu 1517f-3 Pn\/dp 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
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    Simatic S7-1500 Cpu 1518-4
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    Simatic S7-1500 Cpu 1518-4 Dp
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    Simatic S7-1500 Cpu 1518-4 Dp Firmware
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    Simatic S7-1500 Cpu 1518-4 Firmware
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    Simatic S7-1500 Cpu 1518-4 Pn
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    Simatic S7-1500 Cpu 1518-4 Pn\/dp
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    Simatic S7-1500 Cpu 1518-4 Pn\/dp Firmware
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    Simatic S7-1500 Cpu 1518-4 Pn\/dp Mfp
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    Simatic S7-1500 Cpu 1518-4 Pn\/dp Mfp Firmware
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    Simatic S7-1500 Cpu 1518-4 Pn Firmware
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    Simatic S7-1500 Cpu 1518 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 1518f-4 Pn\/dp
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    Simatic S7-1500 Cpu 1518f-4 Pn\/dp 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 15pro-2
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    Simatic S7-1500 Cpu 15pro-2 Firmware
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    Simatic S7-1500 Cpu 15prof-2
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    Simatic S7-1500 Cpu 15prof-2 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 S7-1500 Software Controller Firmware
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    Simatic S7-plcsim Advanced
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    Simatic S7-plcsim Advanced Firmware
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    Siplus Et 200sp Cp 1542sp-1 Irc Tx Rail
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    Siplus Et 200sp Cp 1542sp-1 Irc Tx Rail Firmware
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    Siplus Et 200sp Cp 1543sp-1 Isec
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    Siplus Et 200sp Cp 1543sp-1 Isec Firmware
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    Siplus Et 200sp Cp 1543sp-1 Isec Tx Rail
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    Siplus Et 200sp Cp 1543sp-1 Isec Tx Rail Firmware
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    Siplus S7-1200 Cp 1243-1
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    Siplus S7-1200 Cp 1243-1 Firmware
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    Siplus S7-1200 Cp 1243-1 Rail
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    Siplus S7-1200 Cp 1243-1 Rail Firmware
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    Siplus Tim 1531 Irc
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    Siplus Tim 1531 Irc 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)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    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