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CVE-2020-0836— Windows DNS Denial of Service Vulnerability

Quick assessment

Affected

Microsoft Windows Server version 2004

Exploitation

High exploitation probability; assess promptly

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows DNS是美国微软（Microsoft）公司的一个域名解析服务。域名系统（DNS）是包含TCP / IP的行业标准协议套件之一，并且DNS客户端和DNS服务器共同为计算机和用户提供计算机名称到IP地址的映射名称解析服务。 Microsoft Windows DNS 存在输入验证错误漏洞，攻击者借助该漏洞可导致DNS服务无响应。以下产品及版本受到影响： Windows Server 2008 R2版本， Windows Server 1909版本， Windows Serv

CVSS 7.5 · High EPSS 5.05% · P92 Updated Feb 24, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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I. Basic Information for CVE-2020-0836

Vulnerability Information

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Vulnerability Title

Windows DNS Denial of Service Vulnerability

Source: CVE Program / CVE List V5

Vulnerability Description

A denial of service vulnerability exists in Windows DNS when it fails to properly handle queries. An attacker who successfully exploited this vulnerability could cause the DNS service to become nonresponsive. To exploit the vulnerability, an authenticated attacker could send malicious DNS queries to a target, resulting in a denial of service. The update addresses the vulnerability by correcting how Windows DNS processes queries.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Vulnerability Title

Microsoft Windows DNS 输入验证错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE
Microsoft	Windows Server version 2004	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2004::::::::`
Microsoft	Windows Server 2019	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2019::::::::`
Microsoft	Windows Server 2019 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2019::::::::`
Microsoft	Windows Server, version 1909 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_1909::::::::`
Microsoft	Windows Server, version 1903 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_1903::::::::`
Microsoft	Windows Server 2016	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2016::::::::`
Microsoft	Windows Server 2016 (Server Core installation)	10.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2016::::::::`
Microsoft	Windows Server 2008 Service Pack 2	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_sp2:::::::x64:*`
Microsoft	Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_sp2:::::::x64:*`
Microsoft	Windows Server 2008 Service Pack 2	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_sp2:::::::x86:*`
Microsoft	Windows Server 2008 R2 Service Pack 1	6.1.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_R2:::::::x64:*`
Microsoft	Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.0.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2008_R2:::::::x64:*`
Microsoft	Windows Server 2012	6.2.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012:::::::x64:*`
Microsoft	Windows Server 2012 (Server Core installation)	6.2.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012:::::::x64:*`
Microsoft	Windows Server 2012 R2	6.3.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012_R2:::::::x64:*`
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.0 ~ publication	`cpe:2.3:o:microsoft:windows_server_2012_R2:::::::x64:*`

II. Public POCs for CVE-2020-0836

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2020-0836

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Vendor Advisories for CVE-2020-0836 (1)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0836 x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2020-0836

Same Patch Batch · Microsoft · 2020-09-11 · 129 CVEs total

CVE-2020-1595	9.9 CRITICAL	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1210	9.9 CRITICAL	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1523	8.9 HIGH	Microsoft SharePoint Server Tampering Vulnerability
CVE-2020-0718	8.8 HIGH	Active Directory Remote Code Execution Vulnerability
CVE-2020-0761	8.8 HIGH	Active Directory Remote Code Execution Vulnerability
CVE-2020-1129	8.8 HIGH	Microsoft Windows Codecs Library Remote Code Execution Vulnerability
CVE-2020-1012	8.8 HIGH	WinINet API Elevation of Privilege Vulnerability
CVE-2020-0922	8.8 HIGH	Microsoft COM for Windows Remote Code Execution Vulnerability
CVE-2020-1453	8.6 HIGH	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1200	8.6 HIGH	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1452	8.6 HIGH	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1460	8.6 HIGH	Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2020-1576	8.5 HIGH	Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16875	8.4 HIGH	Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2020-1285	8.4 HIGH	GDI+ Remote Code Execution Vulnerability
CVE-2020-1507	7.9 HIGH	Microsoft COM for Windows Elevation of Privilege Vulnerability
CVE-2020-1039	7.8 HIGH	Jet Database Engine Remote Code Execution Vulnerability
CVE-2020-1074	7.8 HIGH	Jet Database Engine Remote Code Execution Vulnerability
CVE-2020-1115	7.8 HIGH	Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2020-1053	7.8 HIGH	DirectX Elevation of Privilege Vulnerability

Showing top 20 of 129 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Windows Server version 2004

Same vendor: Microsoft

V. Comments for CVE-2020-0836

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2020-0836— Windows DNS Denial of Service Vulnerability

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2020-0836

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2020-0836

III. Intelligence Information for CVE-2020-0836

Vendor Advisories for CVE-2020-0836 (1)

Same Patch Batch · Microsoft · 2020-09-11 · 129 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2020-0836

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