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    CVE-2020-16899

    <p>A denial of service vulnerability exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. An attacker who successfully exploited this vulnerability could cause a target system to stop responding.</p> <p>To exploit this vulnerability, an attacker would have to send specially crafted ICMPv6 Router Advertisement packets to a remote Windows computer. The vulnerability would not allow an attacker to execute code or to elevate user rights directly.</p> <p>The update addresses the vulnerability by correcting how the Windows TCP/IP stack handles ICMPv6 Router Advertisement packets.</p>

    Published:Oct 16, 2020
    Last Modified:Feb 23, 2026
    EPS:Oct 16, 2020
    EPSS Score:0.42306
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    Windows 10
    Vendor
    Microsoft
    Product
    Windows 10 1803
    Vendor
    Microsoft
    Product
    Windows 10 1809
    Vendor
    Microsoft
    Product
    Windows 10 1909
    Vendor
    Microsoft
    Product
    Windows Server 1903
    Vendor
    Microsoft
    Product
    Windows Server 1909
    Vendor
    Microsoft
    Product
    Windows Server 2004
    Vendor
    Microsoft
    Product
    Windows Server 2016
    Vendor
    Microsoft
    Product
    Windows Server 2019

    Exploits

    https://github.com/advanced-threat-research/CVE-2020-16899

    Common Weakness Enumeration

    No CWE recorded yet

    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