CVE-2020-1350
A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka…
- Published
- Updated
- Reserved
- Assigned by
- microsoft
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'.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Windows DNS Server Remote Code Execution Vulnerability.
- Added
- 3 Nov 2021
- Fix due (US federal)
- 3 May 2022
- Used by ransomware
- Not known
Apply updates per vendor instructions.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | Critical10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 96.7% · top 0.1% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 10.0.
Weakness
- Remote Code Execution
- CWE-20 Improper Input Validation (opens in a new tab)All about CWE-20 and its CVEs
Affected products
- affected 2019
- affected 2019 (Core installation)
- affected 2016
- affected 2016 (Core installation)
- affected 2008 for 32-bit Systems Service Pack 2
- affected 2008 for 32-bit Systems Service Pack 2 (Core installation)
- affected 2008 for x64-based Systems Service Pack 2
- affected 2008 for x64-based Systems Service Pack 2 (Core installation)
- affected 2008 R2 for x64-based Systems Service Pack 1
- affected 2008 R2 for x64-based Systems Service Pack 1 (Core installation)
- affected 2012
- affected 2012 (Core installation)
- affected 2012 R2
- affected 2012 R2 (Core installation)
Microsoft · Windows Server, version 1909 (Server Core installation)
- affected unspecified
Microsoft · Windows Server, version 1903 (Server Core installation)
- affected unspecified
Microsoft · Windows Server, version 2004 (Server Core installation)
- affected unspecified
References (3)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1350 (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/158484/SIGRed-Windows-DNS-Denial-Of-Service.html (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1350 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-1350)Record last updated .