Vulnerability · Published Mar 11, 2021 · Assigned by microsoft
CVE-2021-26879Windows Network Address Translation (NAT) Denial of Service Vulnerability
High 7.5
In plain English
A high-severity security flaw in Windows 10 Version 1507 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.9% (higher than 90% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)3.9%top 9.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Windows Network Address Translation (NAT) Denial of Service Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – before 10.0.10240.18874 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – before 10.0.14393.4283 |
| Microsoft | Windows 10 Version 1803 | 10.0.0 – before 10.0.17134.2087 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.1817 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 – before 10.0.18363.1440 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 – before 10.0.19043.867 |
| Microsoft | Windows 8.1 | 6.3.0 – before 6.3.9600.19968 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – before 6.3.9600.19968 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – before 6.3.9600.19968 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – before 10.0.14393.4283 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – before 10.0.14393.4283 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.1817 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.1817 |
| Microsoft | Windows Server version 2004 | 10.0.0 – before 10.0.19043.867 |
| Microsoft | Windows Server version 20H2 | 10.0.0 – before 10.0.19043.867 |
| Microsoft | Windows Server, version 1909 (Server Core installation) | 10.0.0 – before 10.0.18363.1440 |
References
- Windows Network Address Translation (NAT) Denial of Service Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26879 x_refsource_MISC, x_transferred