Vulnerability · Published Mar 11, 2021 · Assigned by microsoft
CVE-2021-26863Windows Win32k Elevation of Privilege Vulnerability
High 7.0
In plain English
A high-severity security flaw in Windows 10 Version 1803 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 11.9% (higher than 96% of all known vulnerabilities).
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)11.9%top 3.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Windows Win32k Elevation of Privilege Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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 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 Win32k Elevation of Privilege Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26863 x_refsource_MISC, x_transferred
- http://packetstormsecurity.com/files/161768/Microsoft-Windows-Kernel-NtGdiGetDeviceCapsAll-Race-Condition-Use-After-Free.html x_refsource_MISC, x_transferred