Snap7 Project

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    Products: 2
    Vulnerabilities: 2
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    Vulnerabilities

    CVE-2020-22552

    The Snap7 server component in version 1.4.1, when an attacker sends a crafted packet with COTP protocol the last-data-unit flag set to No and S7 writes a var function, the Snap7 server will be crashed.

    Last Modified: Nov 21, 2024
    Published: Oct 28, 2020

    CVE-2017-1000230

    The Snap7 Server version 1.4.1 can be crashed when the ItemCount field of the ReadVar or WriteVar functions of the S7 protocol implementation in Snap7 are provided with unexpected input, thus resulting in denial of service attack.

    Last Modified: Apr 20, 2025
    Published: Nov 17, 2017
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