CVEvulnerability

CVE-2020-1350

10.0 CRITICAL Known exploited Published 2020-07-14 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows DNS Server Remote Code Execution Vulnerability — Microsoft Windows

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.

Added to KEV
2021-11-03
Remediation due
2022-05-03
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
Reference CISA's ED 20-03 (https://www.cisa.gov/news-events/directives/ed-20-03-mitigate-windows-dns-server-remote-code-execution-vulnerability-july-2020-patch-tuesday) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 20-03. https://nvd.nist.gov/vuln/detail/CVE-2020-1350
Status
Analyzed
Published
2020-07-14
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
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 configurations

• microsoft windows server 2008 • microsoft windows server 2008 r2 • microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 • microsoft windows server 2019

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References