Security readout for executives and security teams
CVE-2020-1350 is a critical flaw in Microsoft Windows DNS Server. A remote, unauthenticated attacker could execute code if a vulnerable DNS server mishandles requests. Because DNS is core infrastructure and CISA lists this CVE as known exploited, affected Windows Server DNS systems should be treated as urgent remediation targets. Exposure is likely where Microsoft Windows Server is running the DNS Server role on listed versions, including domain-controller DNS deployments and internal DNS infrastructure. The bundle does not identify Windows client systems as affected. Reachability from untrusted networks materially increases urgency. Treat this as a top-priority infrastructure risk. It affects a foundational Microsoft server service, has maximum CVSS severity, and appears in CISA's known exploited catalog. Remediation should be tracked to closure, with exceptions documented and time-bound. Mitigation focus: Identify all Windows Server systems running the DNS Server role.; Review and apply Microsoft guidance or security updates for CVE-2020-1350.; Prioritize externally reachable DNS servers and domain-controller DNS servers..
Michael Williams reviewed this cited source version on .
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Open ATT&CK lookupExecution behavior lookup
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Open ATT&CK lookupCVE-2020-1350 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1350CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1350CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.