CVE-2021-27063

HighCVSS 7.5

Published: 11/03/2021(UTC)Updated: 19/08/2026(UTC)Translated: 19/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Very high risk

5.74%

92th percentile - higher than 92% of all known CVEs

Denial of service vulnerability in Windows DNS Server. An attacker could exploit this vulnerability to cause the DNS service to become unavailable.

Risk of disruption to DNS services, which could impact the availability of applications and network services in the organization.

Install the security update from the vendor that addresses this vulnerability.

Original NVD description (English source)

Windows DNS Server Denial of Service Vulnerability