CVE-2021-26879: Windows Network Address Translation (NAT) Denial of Service Vulnerability
Windows NAT Denial of Service Vulnerability
Other sources
Windows Network Address Translation (NAT) 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 6.3.9600.19968Patch KB5000853 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.18363.1440Patch KB5000808 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.4283Patch KB5000803 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19043.867Patch KB5000802 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.10240.18874Patch KB5000807 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.1817Patch KB5000822 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17134.2087Patch KB5000809
Event History
Frequently Asked Questions
What access does an attacker need to exploit this vulnerability?
The CVSS vector indicates that exploitation is network-accessible, requires low attack complexity, and does not require privileges or user interaction.
What security impact is indicated beyond service availability?
The CVSS vector indicates a high availability impact, with no indicated confidentiality or integrity impact.
Which Windows products are identified as affected?
The listed software includes Windows 10, Windows 8.1, Windows 8.1 for x64-based systems, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, and Windows Server.