CVE-2020-1350
Actively exploited. CVE-2020-1350 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2020-1350 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
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.
CSIRTS triage
- What
- The DNS Server fails to handle requests properly, allowing remote code execution.
- Who is affected
- Users of Microsoft Windows DNS Servers.
- Urgency
- Remediation is critical due to active exploitation and high severity.
- Action
- Apply the latest security updates for Windows DNS Server.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2020-1350
Get an email if CVE-2020-1350 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2020-1350 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2020-1350: Microsoft Windows DNS Server Remote Code Execution Vulnerabilitycisa-kev · 2021-11-03
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2020-1350)