Vulnerability · Published Mar 11, 2021 · Assigned by microsoft
CVE-2021-26892Windows Extensible Firmware Interface Security Feature Bypass Vulnerability
Medium 6.2
In plain English
A medium-severity security flaw in Windows 10 Version 1607 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities).
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)1.3%top 29.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Windows Extensible Firmware Interface Security Feature Bypass Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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 1809 | 10.0.0 – 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 10 Version 20H2 | 10.0.0 – before 10.0.19043.867 |
| 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 Extensible Firmware Interface Security Feature Bypass Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26892 x_refsource_MISC, x_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-21-330/ x_refsource_MISC, x_transferred