What’s Vulnerable › Vulnerabilities

CVE-2020-1350: Microsoft Windows DNS Server Remote Code Execution Vulnerability

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 96.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-14 · updated 2026-06-17
• Weakness: CWE-20

Description

A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka 'Windows DNS Server Remote Code Execution Vulnerability'.

Affected products

• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: all versions
• Microsoft Windows Server 2019: all versions
• Microsoft Windows Server: 2019, 2019 (Core installation), 2016, 2016 (Core installation), 2008 for 32-bit Systems Service Pack 2, 2008 for 32-bit Systems Service Pack 2 (Core installation) (+8)
• Microsoft Windows Server, version 1903 (Server Core installation): all versions
• Microsoft Windows Server, version 1909 (Server Core installation): all versions
• Microsoft Windows Server version 2004: all versions

References

• http://packetstormsecurity.com/files/158484/SIGRed-Windows-DNS-Denial-Of-Service.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1350
• http://packetstormsecurity.com/files/158484/SIGRed-Windows-DNS-Denial-Of-Service.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1350
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1350

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