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    CVE-2021-33745

    Windows DNS Server Denial of Service Vulnerability

    Published:Jul 14, 2021
    Last Modified:Aug 10, 2026
    EPS:Jul 14, 2021
    EPSS Score:0.02654
    CVSS Score:6.5

    Affected Products

    Vendor
    Microsoft
    Product
    Windows Server 2004
    Vendor
    Microsoft
    Product
    Windows Server 2008
    Vendor
    Microsoft
    Product
    Windows Server 2008 R2
    Vendor
    Microsoft
    Product
    Windows Server 2008 Sp2
    Vendor
    Microsoft
    Product
    Windows Server 2012
    Vendor
    Microsoft
    Product
    Windows Server 2012 R2
    Vendor
    Microsoft
    Product
    Windows Server 2016
    Vendor
    Microsoft
    Product
    Windows Server 2019
    Vendor
    Microsoft
    Product
    Windows Server 20H2

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2021-43247 (CVSS 7.8) — Windows TCP/IP Driver Elevation of Privilege Vulnerability…
    CVE-2021-43246 (CVSS 5.6) — Windows Hyper-V Denial of Service Vulnerability…
    CVE-2021-43244 (CVSS 6.5) — Windows Kernel Information Disclosure Vulnerability…
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    CVE-2021-43239 (CVSS 7.1) — Windows Recovery Environment Agent Elevation of Privilege Vulnerability…
    CVE-2021-43238 (CVSS 7.8) — Windows Remote Access Elevation of Privilege Vulnerability…

    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