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Vulnerability · Published Jul 14, 2021 · Assigned by microsoft

CVE-2021-33745Windows DNS Server Denial of Service Vulnerability

Medium 6.5

In plain English

A medium-severity security flaw in Windows Server 2008 R2 Service Pack 1 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)2.9%top 13.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Windows DNS Server Denial of Service Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – before 6.1.7601.25661
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – before 6.1.7601.25661
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.21167
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – before 6.0.6003.21167
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.23409
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.23409
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.20069
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.20069
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.4530
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.4530
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.2061
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.2061
Microsoft Windows Server version 2004 10.0.0 – before 10.0.19041.1110
Microsoft Windows Server version 20H2 10.0.0 – before 10.0.19042.1110

References