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    Dashboard / CVE / CVE-2023-28831

    CVE-2023-28831

    The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

    Published:Sep 12, 2023
    Last Modified:Nov 11, 2025
    EPS:Sep 12, 2023
    EPSS Score:0.00428
    CVSS Score:7.5

    Affected Products

    Vendor
    Siemens
    Product
    Simatic Cloud Connect 7 Cc712
    Vendor
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    Simatic Cloud Connect 7 Cc712 Firmware
    Vendor
    Siemens
    Product
    Simatic Cloud Connect 7 Cc716
    Vendor
    Siemens
    Product
    Simatic Cloud Connect 7 Cc716 Firmware
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    Siemens
    Product
    Simatic Drive Controller Cpu 1504d Tf
    Vendor
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    Simatic Drive Controller Cpu 1504d Tf Firmware
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    Siemens
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    Simatic Drive Controller Cpu 1507d Tf
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    Siemens
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    Simatic Drive Controller Cpu 1507d Tf Firmware
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    Siemens
    Product
    Simatic Et 200sp Open Controller Cpu
    Vendor
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    Simatic Et 200sp Open Controller Cpu Firmware
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    Siemens
    Product
    Simatic S7-1200 Cpu
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    Simatic S7-1200 Cpu Firmware
    Vendor
    Siemens
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    Simatic S7-1500 Cpu 1510sp-1 Pn
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    Simatic S7-1500 Cpu 1510sp-1 Pn Firmware
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    Simatic S7-1500 Cpu 1510sp F-1 Pn
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    Simatic S7-1500 Cpu 1510sp F-1 Pn 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-1 Pn
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    Simatic S7-1500 Cpu 1511c-1 Pn 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 Pn
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    Simatic S7-1500 Cpu 1511t-1 Pn Firmware
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    Simatic S7-1500 Cpu 1511tf-1 Pn
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    Simatic S7-1500 Cpu 1511tf-1 Pn Firmware
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    Simatic S7-1500 Cpu 1512c-1 Pn
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    Simatic S7-1500 Cpu 1512c-1 Pn Firmware
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    Simatic S7-1500 Cpu 1512sp-1 Pn
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    Simatic S7-1500 Cpu 1512sp-1 Pn Firmware
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    Simatic S7-1500 Cpu 1512sp F-1 Pn
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    Simatic S7-1500 Cpu 1512sp F-1 Pn 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 Pn
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    Simatic S7-1500 Cpu 1513f-1 Pn Firmware
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    Simatic S7-1500 Cpu 1513r-1 Pn
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    Simatic S7-1500 Cpu 1513r-1 Pn Firmware
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    Simatic S7-1500 Cpu 1514sp-2 Pn
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    Simatic S7-1500 Cpu 1514sp-2 Pn Firmware
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    Simatic S7-1500 Cpu 1514sp F-2 Pn
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    Simatic S7-1500 Cpu 1514sp F-2 Pn Firmware
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    Simatic S7-1500 Cpu 1514spt-2 Pn
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    Simatic S7-1500 Cpu 1514spt-2 Pn Firmware
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    Simatic S7-1500 Cpu 1514spt F-2 Pn
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    Simatic S7-1500 Cpu 1514spt F-2 Pn 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 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 Pn
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    Simatic S7-1500 Cpu 1515r-2 Pn Firmware
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    Simatic S7-1500 Cpu 1515t-2 Pn
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    Simatic S7-1500 Cpu 1515t-2 Pn Firmware
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    Simatic S7-1500 Cpu 1515tf-2 Pn
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    Simatic S7-1500 Cpu 1515tf-2 Pn Firmware
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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 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 1516t-3 Pn\/dp
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    Simatic S7-1500 Cpu 1516t-3 Pn\/dp Firmware
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    Simatic S7-1500 Cpu 1516tf-3 Pn\/dp
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    Simatic S7-1500 Cpu 1516tf-3 Pn\/dp Firmware
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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 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 1517h-3 Pn
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    Simatic S7-1500 Cpu 1517h-3 Pn Firmware
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    Simatic S7-1500 Cpu 1517t-3 Pn\/dp
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    Simatic S7-1500 Cpu 1517t-3 Pn\/dp Firmware
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    Simatic S7-1500 Cpu 1517tf-3 Pn\/dp
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    Simatic S7-1500 Cpu 1517tf-3 Pn\/dp Firmware
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    Product
    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 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 1518f-4 Pn\/dp Mfp
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    Simatic S7-1500 Cpu 1518f-4 Pn\/dp Mfp Firmware
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    Simatic S7-1500 Cpu 1518hf-4 Pn
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    Simatic S7-1500 Cpu 1518hf-4 Pn Firmware
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    Simatic S7-1500 Cpu 1518t-4 Pn\/dp
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    Simatic S7-1500 Cpu 1518t-4 Pn\/dp Firmware
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    Simatic S7-1500 Cpu 1518tf-4 Pn\/dp
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    Simatic S7-1500 Cpu 1518tf-4 Pn\/dp Firmware
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    Simatic S7-1500 Cpu S7-1518-4 Pn\/dp Odk
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    Simatic S7-1500 Cpu S7-1518-4 Pn\/dp Odk Firmware
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    Simatic S7-1500 Cpu S7-1518f-4 Pn\/dp Odk
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    Simatic S7-1500 Cpu S7-1518f-4 Pn\/dp Odk Firmware
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    Simatic S7-1500 Et 200pro
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    Simatic S7-1500 Et 200pro 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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    Product
    Siplus Et 200sp Cpu 1510sp-1 Pn
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    Siplus Et 200sp Cpu 1510sp-1 Pn Firmware
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    Siplus Et 200sp Cpu 1510sp-1 Pn Rail
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    Siplus Et 200sp Cpu 1510sp-1 Pn Rail Firmware
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    Product
    Siplus Et 200sp Cpu 1510sp F-1 Pn
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    Siplus Et 200sp Cpu 1510sp F-1 Pn Firmware
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    Siplus Et 200sp Cpu 1510sp F-1 Pn Rail
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    Siplus Et 200sp Cpu 1510sp F-1 Pn Rail Firmware
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    Product
    Siplus Et 200sp Cpu 1512sp-1 Pn
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    Siplus Et 200sp Cpu 1512sp-1 Pn Firmware
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    Siplus Et 200sp Cpu 1512sp-1 Pn Rail
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    Siplus Et 200sp Cpu 1512sp-1 Pn Rail Firmware
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    Siplus Et 200sp Cpu 1512sp F-1 Pn
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    Siplus Et 200sp Cpu 1512sp F-1 Pn Firmware
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    Siplus Et 200sp Cpu 1512sp F-1 Pn Rail
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    Siplus Et 200sp Cpu 1512sp F-1 Pn Rail Firmware
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    Product
    Siplus S7-1500 Cpu 1511-1 Pn
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    Siplus S7-1500 Cpu 1511-1 Pn Firmware
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    Siplus S7-1500 Cpu 1511-1 Pn T1 Rail
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    Siplus S7-1500 Cpu 1511-1 Pn T1 Rail Firmware
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    Product
    Siplus S7-1500 Cpu 1511-1 Pn Tx Rail
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    Siplus S7-1500 Cpu 1511-1 Pn Tx Rail Firmware
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    Product
    Siplus S7-1500 Cpu 1511f-1 Pn
    Vendor
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    Siplus S7-1500 Cpu 1511f-1 Pn Firmware
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    Product
    Siplus S7-1500 Cpu 1513-1 Pn
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    Siplus S7-1500 Cpu 1513-1 Pn Firmware
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    Siplus S7-1500 Cpu 1513f-1 Pn
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    Siplus S7-1500 Cpu 1513f-1 Pn Firmware
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    Siplus S7-1500 Cpu 1515f-2 Pn
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    Siplus S7-1500 Cpu 1515f-2 Pn Firmware
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    Siplus S7-1500 Cpu 1515f-2 Pn Rail
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    Siplus S7-1500 Cpu 1515f-2 Pn Rail Firmware
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    Siplus S7-1500 Cpu 1515f-2 Pn T2 Rail
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    Siplus S7-1500 Cpu 1515f-2 Pn T2 Rail Firmware
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    Product
    Siplus S7-1500 Cpu 1515r-2 Pn
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    Siplus S7-1500 Cpu 1515r-2 Pn Firmware
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    Siplus S7-1500 Cpu 1515r-2 Pn Tx Rail
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    Siplus S7-1500 Cpu 1515r-2 Pn Tx Rail Firmware
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    Siplus S7-1500 Cpu 1516-3 Pn\/dp
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    Siplus S7-1500 Cpu 1516-3 Pn\/dp Firmware
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    Siplus S7-1500 Cpu 1516-3 Pn\/dp Rail
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    Siplus S7-1500 Cpu 1516-3 Pn\/dp Rail Firmware
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    Siplus S7-1500 Cpu 1516-3 Pn\/dp Tx Rail
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    Siplus S7-1500 Cpu 1516-3 Pn\/dp Tx Rail Firmware
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    Siplus S7-1500 Cpu 1516f-3 Pn\/dp
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    Siplus S7-1500 Cpu 1516f-3 Pn\/dp Firmware
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    Siplus S7-1500 Cpu 1516f-3 Pn\/dp Rail
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    Siplus S7-1500 Cpu 1516f-3 Pn\/dp Rail Firmware
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    Siplus S7-1500 Cpu 1517h-3 Pn
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    Siplus S7-1500 Cpu 1517h-3 Pn Firmware
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    Siplus S7-1500 Cpu 1518-4 Pn\/dp
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    Siplus S7-1500 Cpu 1518-4 Pn\/dp Firmware
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    Siplus S7-1500 Cpu 1518-4 Pn\/dp Mfp
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    Siplus S7-1500 Cpu 1518-4 Pn\/dp Mfp Firmware
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    Siplus S7-1500 Cpu 1518f-4 Pn\/dp
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    Siplus S7-1500 Cpu 1518f-4 Pn\/dp Firmware
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    Siplus S7-1500 Cpu 1518hf-4 Pn
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    Siplus S7-1500 Cpu 1518hf-4 Pn Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    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