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CVE-2026-33839

nvd nist
Published: May 12, 2026Modified: May 14, 2026

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7.0
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.0 / Impact: 5.9
Source: secure@microsoft.com

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

Affected (20)

Microsoft
11 products
Windows 10 1809
Windows 10 21h2
Windows 10 22h2
Windows 11 23h2
Windows 11 24h2
Windows 11 25h2
Windows 11 26h1
Windows Server 2019
Windows Server 2022
Windows Server 2022 23h2
Windows Server 2025
Configuration A
20 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
Windows 10 1809
Before 10.0.17763.8755
Windows 10 1809
Before 10.0.17763.8755
Microsoft
Windows 10 21h2
Before 10.0.19044.7291
Windows 10 21h2
Before 10.0.19044.7291
Windows 10 21h2
Before 10.0.19044.7291
Microsoft
Windows 10 22h2
Before 10.0.19045.7291
Windows 10 22h2
Before 10.0.19045.7291
Windows 10 22h2
Before 10.0.19045.7291
Microsoft
Windows 11 23h2
Before 10.0.22631.7079
Windows 11 23h2
Before 10.0.22631.7079
Microsoft
Windows 11 24h2
Before 10.0.26100.8390
Windows 11 24h2
Before 10.0.26100.8390
Microsoft
Windows 11 25h2
Before 10.0.26200.8390
Windows 11 25h2
Before 10.0.26200.8390
Microsoft
Windows 11 26h1
Before 10.0.28000.2113
Windows 11 26h1
Before 10.0.28000.2113
Windows Server 2019
Before 10.0.17763.8755
Windows Server 2022
Before 10.0.20348.5074
Windows Server 2022 23h2
Before 10.0.25398.2330
Windows Server 2025
Before 10.0.26100.32772

Related CWEs

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (1)

Source: secure@microsoft.com
Vendor Advisory

Timeline

No history available yet.