7.5
High
CVE-2021-27063 Windows DNS Server Denial of Service Vulnerability
Description
Windows DNS Server Denial of Service Vulnerability
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2019 10.0 | 10.0.17763.0 → < 10.0.17763.1817 | 10.0.17763.1817 |
| Windows Server 2019 (Server Core installation) 10.0 | 10.0.17763.0 → < 10.0.17763.1817 | 10.0.17763.1817 |
| Windows Server, version 1909 (Server Core installation) 10.0 | 10.0.0 → < 10.0.18363.1440 | 10.0.18363.1440 |
| Windows Server version 2004 10.0 | 10.0.0 → < 10.0.19043.867 | 10.0.19043.867 |
| Windows Server version 20H2 10.0 | 10.0.0 → < 10.0.19043.867 | 10.0.19043.867 |
| Windows Server 2016 10.0 | 10.0.14393.0 → < 10.0.14393.4283 | 10.0.14393.4283 |
| Windows Server 2016 (Server Core installation) 10.0 | 10.0.14393.0 → < 10.0.14393.4283 | 10.0.14393.4283 |
| Windows Server 2008 Service Pack 2 6.0 | 6.0.6003.0 → < 6.0.6003.21070 | 6.0.6003.21070 |
| Windows Server 2008 Service Pack 2 (Server Core installation) 6.0 | 6.0.6003.0 → < 6.0.6003.21070 | 6.0.6003.21070 |
Show the 7 other branches Hide the 7 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2008 Service Pack 2 6.0 | 6.0.0 → latest | No fix stated |
| Windows Server 2008 R2 Service Pack 1 6.1 | 6.1.7601.0 → < 6.1.7601.24566 | 6.1.7601.24566 |
| Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1 | 6.1.7601.0 → < 6.1.7601.24566 | 6.1.7601.24566 |
| Windows Server 2012 6.2 | 6.2.9200.0 → < 6.2.9200.23298 | 6.2.9200.23298 |
| Windows Server 2012 (Server Core installation) 6.2 | 6.2.9200.0 → < 6.2.9200.23298 | 6.2.9200.23298 |
| Windows Server 2012 R2 6.3 | 6.3.9600.0 → < 6.3.9600.19968 | 6.3.9600.19968 |
| Windows Server 2012 R2 (Server Core installation) 6.3 | 6.3.9600.0 → < 6.3.9600.19968 | 6.3.9600.19968 |
References
- Windows DNS Server Denial of Service Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
Other CVEs of Windows Server 2019
The 5745 CVEs of Windows Server 2019 →
CVE-2026-108471
Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to…
8.8
High
CVE-2026-108136
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally
7.8
High
CVE-2026-108129
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network
6.5
Medium
CVE-2026-108132
Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally
7.0
High