CVE-2021-31883

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    CVE-2021-31883

    Published: 9 Nov 2021Last Modified: 10 Mar 2026

    Summary:

    Details: A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). When processing a DHCP ACK message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0013)

    References: https://cert-portal.siemens.com/productcert/html/ssa-044112.html, https://cert-portal.siemens.com/productcert/html/ssa-114589.html, https://cert-portal.siemens.com/productcert/html/ssa-620288.html, https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf, , https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf, https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-31883 | CVE-DB