CVE-2021-33745

Windows DNS Server Denial of Service Vulnerability

Score

CVSS 3.1 6.5 Medium

Status

Modified - secure@microsoft.com

Published

2021-07-14

Last modified

2026-08-10

Affected products

• Windows Server 2004 (Microsoft)
• Windows Server 2008 (Microsoft)
• Windows Server 2008 R2 (Microsoft)
• Windows Server 2008 Sp2 (Microsoft)
• Windows Server 2012 (Microsoft)
• Windows Server 2012 R2 (Microsoft)
• Windows Server 2016 (Microsoft)
• Windows Server 2019 (Microsoft)
• Windows Server 20H2 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33745
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33745