Vulnerability · Published Jul 14, 2021 · Assigned by microsoft
CVE-2021-33779Windows AD FS Security Feature Bypass Vulnerability
High 8.1
In plain English
A high-severity security flaw in Windows Server 2016 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)2.4%top 15.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Windows AD FS Security Feature Bypass Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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
- Windows AD FS Security Feature Bypass Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33779 x_refsource_MISC, x_transferred