CVE-2021-26863

Windows Win32k Elevation of Privilege Vulnerability

Windows Win32k Elevation of Privilege Vulnerability

Affected

Microsoft · Windows 10 Version 1803 · Windows 10 Version 1809 · Windows 10 Version 1909 · Windows 10 Version 2004 · Windows 10 Version 20H2 · Windows Server 2019

CVSS v3.1 NVD

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 MICROSOFT

7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

11.94% chance of exploitation in the next 30 days, 96th percentile

Published

2021-03-11

Updated

2026-08-19

Proof-of-concept exploits (1)

• http://packetstormsecurity.com/files/161768/Microsoft-Windows-Kernel-NtGdiGetDeviceCapsAl…

Security advisories

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26863

References

• CVE Record
• NVD entry