Microsoft Windows 11 version 26H1 vulnerabilities
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Published CVEs affecting Microsoft Windows 11 version 26H1: 2555 record(s), with affected versions and fixes.
CVE-2026-21235
High · 7.3
CWE-416 Feb 10, 2026
Windows Graphics Component Elevation of Privilege Vulnerability
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
CVE-2026-21234
High · 7.0
CWE-362 Feb 10, 2026
Windows Connected Devices Platform Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.
CVE-2026-21232
High · 7.8
CWE-822 Feb 10, 2026
Windows HTTP.sys Elevation of Privilege Vulnerability
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-21231
High · 7.8
CWE-362 Feb 10, 2026
Windows Kernel Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-20846
High · 7.5
CWE-126 Feb 10, 2026
GDI+ Denial of Service Vulnerability
Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.