CVE-2021-34444: Windows DNS Server Denial of Service Vulnerability
Windows DNS Server Denial of Service Vulnerability
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.20069Patch KB5004285 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.4530Patch KB5004238 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.0.6003.21167Patch KB5004299 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.23409Patch KB5004302 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.1.7601.25661Patch KB5004307 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.2061Patch KB5004244 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19042.1110Patch KB5004237 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19041.1110Patch KB5004237
Event History
Frequently Asked Questions
What is the severity of CVE-2021-34444?
CVE-2021-34444 has a severity rating of critical as it can lead to a denial of service in affected Windows DNS Servers.
How do I fix CVE-2021-34444?
To fix CVE-2021-34444, install the latest security updates provided by Microsoft for your Windows Server version.
Which versions of Windows are affected by CVE-2021-34444?
CVE-2021-34444 affects multiple versions of Windows Server including 2008, 2012, 2016, and 2019.
What exploitations can occur due to CVE-2021-34444?
Exploitation of CVE-2021-34444 can lead to a denial of service, causing affected systems to become unresponsive.
Is there a workaround for CVE-2021-34444?
Microsoft has not provided any specific workarounds for CVE-2021-34444, so applying security updates is recommended.