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Critical · 10.0 Known exploited Public exploit CVE-2020-1350 EUVD-2020-12226GHSA-hcmx-443w-mr76

A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka 'Windows…

Published Jul 14, 2020 · Updated Oct 21, 2025 · Assigned by microsoft

Vendor: Microsoft Product: Windows Server Product: Windows Server, version 1903 (Server Core installation) Product: Windows Server, version 1909 (Server Core installation) Product: Windows Server, version 2004 (Server Core installation) Platform: Windows

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

VendorProductAffectedFixed
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), 2008 for x64-based Systems Service Pack 2, 2008 for x64-based Systems Service Pack 2 (Core installation), 2008 R2 for x64-based Systems… —
Microsoft Windows Server, version 1909 (Server Core installation) unspecified —
Microsoft Windows Server, version 1903 (Server Core installation) unspecified —
Microsoft Windows Server, version 2004 (Server Core installation) unspecified —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 16 repositories · most starred shown

  • ZephrFish/CVE-2020-1350_HoneyPoC ★ 280 · Jul 14, 2020

    HoneyPoC: Proof-of-Concept (PoC) script to exploit SIGRed (CVE-2020-1350). Achieves Domain Admin on Domain Controllers running Windows Server 2000 up to Windows Server 2019.

  • maxpl0it/CVE-2020-1350-DoS ★ 237 · Jul 15, 2020

    A denial-of-service proof-of-concept for CVE-2020-1350

  • psc4re/NSE-scripts ★ 162 · Mar 11, 2020

    NSE scripts to detect CVE-2020-1350 SIGRED and CVE-2020-0796 SMBGHOST, CVE-2021-21972, proxyshell, CVE-2021-34473

  • captainGeech42/CVE-2020-1350 ★ 18 · Jul 16, 2020

    Denial of Service PoC for CVE-2020-1350 (SIGRed)

  • T13nn3s/CVE-2020-1350 ★ 15 · Jul 15, 2020

    This Powershell Script is checking if your server is vulnerable for the CVE-2020-1350 Remote Code Execution flaw in the Windows DNS Service

  • connormcgarr/CVE-2020-1350 ★ 11 · Jul 17, 2020

    CVE-2020-1350 Proof-of-Concept

  • corelight/SIGRed ★ 9 · Jul 15, 2020

    Detection of attempts to exploit Microsoft Windows DNS server via CVE-2020-1350 (AKA SIGRed)

  • zoomerxsec/Fake_CVE-2020-1350 ★ 7 · Jul 14, 2020

    Fake exploit tool, designed to rickroll users attempting to actually exploit.

  • mr-r3b00t/CVE-2020-1350 ★ 4 · Jul 14, 2020
  • graph-inc/CVE-2020-1350 ★ 2 · Jul 18, 2020

    Scanner and Mitigator for CVE 2020-1350

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

References