Microsoft Windows DNS Server Remote Code Execution Vulnerability

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Jul 14, 2020 · Catalog

   Detected

   Microsoft Windows DNS Servers fail to properly handle requests, allowing an attacker to perform remote code execution in the context of the Local System Account. The vulnerability is also known under the moniker of SIGRed.

2. Nov 3, 2021 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. May 3, 2022 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   Microsoft Windows DNS Servers fail to properly handle requests, allowing an attacker to perform remote code execution in the context of the Local System Account. The vulnerability is also known under the moniker of SIGRed.

Affected

• cpe microsoft/windows server 2008version unspecified
• cpe microsoft/windows server 2008r2
• cpe microsoft/windows server 2012version unspecified
• cpe microsoft/windows server 2012r2
• cpe microsoft/windows server 2016version unspecified
• cpe microsoft/windows server 2019version unspecified
• vendor Microsoft Windowsversion unspecified

Sources

• CISA KEVConfirmed exploitationCVE-2020-1350

  Microsoft Windows DNS Servers fail to properly handle requests, allowing an attacker to perform remote code execution in the context of the Local System Account. The vulnerability is also known under the moniker of SIGRed.

  cisa.gov
• CVE.orgVulnerability recordCVE-2020-1350

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2020-1350

  30-day exploitation probability 96.7%

  first.org
• NIST NVDVulnerability recordCVE-2020-1350

  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'.

  nvd.nist.gov
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/158484/SIGRed-Windows-DNS-Denial-Of-Service.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com

References

• Third Party Advisory · packetstormsecurity.com
• CISA note · nvd.nist.gov
• Patch · portal.msrc.microsoft.com
• US Government Resource · cisa.gov
• CISA note · cisa.gov