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Windows 11 26h1

windows_11_26h1

Vendor: Microsoft • 2,034 CVEs

CVEs (2,034)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Microsoft
7Windows 11 23h2
Windows 11 24h2Windows 11 25h2+4 more
Oct 19, 2026
Oct 13, 2026
N/A· v4
5.5 MEDIUM· v3
N/A· v2
Incorrect authorization in Windows SMB Client allows an authorized attacker to bypass a security feature locally.
1Microsoft
11Windows 10 1809
Windows 10 21h2Windows 10 22h2+8 more
Oct 19, 2026
Oct 13, 2026
N/A· v4
4.7 MEDIUM· v3
N/A· v2
Time-of-check time-of-use (toctou) race condition in Windows Projected File System allows an authorized attacker to perform tampering locally.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 19, 2026
Oct 13, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Heap-based buffer overflow in Microsoft XML allows an unauthorized attacker to execute code over a network.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 19, 2026
Oct 13, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Stack-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
7.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Windows Group Policy allows an authorized attacker to elevate privileges locally.
1Microsoft
7Windows 11 23h2
Windows 11 24h2Windows 11 25h2+4 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
7.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
1Microsoft
6Windows 11 23h2
Windows 11 24h2Windows 11 25h2+3 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
7.0 HIGH· v3
N/A· v2
Use after free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.
1Microsoft
9Windows 10 21h2
Windows 10 22h2Windows 11 23h2+6 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
7.8 HIGH· v3
N/A· v2
Improper link resolution before file access ('link following') in Windows Registry allows an authorized attacker to elevate privileges locally.
1Microsoft
11Windows 10 1809
Windows 10 21h2Windows 10 22h2+8 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
4.4 MEDIUM· v3
N/A· v2
Improper certificate validation in Windows Hello allows an authorized attacker to bypass a security feature locally.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 26, 2026
Oct 13, 2026
N/A· v4
7.0 HIGH· v3
N/A· v2
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
1Microsoft
6Windows 11 23h2
Windows 11 24h2Windows 11 25h2+3 more
Oct 21, 2026
Oct 13, 2026
N/A· v4
7.0 HIGH· v3
N/A· v2
Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 21, 2026
Oct 13, 2026
N/A· v4
7.0 HIGH· v3
N/A· v2
Improper privilege management in Windows Installer allows an authorized attacker to elevate privileges locally.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 21, 2026
Oct 13, 2026
N/A· v4
4.7 MEDIUM· v3
N/A· v2
Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
1Microsoft
13Windows 10 1607
Windows 10 1809Windows 10 21h2+10 more
Oct 21, 2026
Oct 13, 2026
N/A· v4
7.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
1Microsoft
11Windows 10 1809
Windows 10 21h2Windows 10 22h2+8 more
Oct 21, 2026
Oct 13, 2026
N/A· v4
6.8 MEDIUM· v3
N/A· v2
Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an unauthorized attacker to elevate privileges with a physical attack.
1Microsoft
11Windows 10 1809
Windows 10 21h2Windows 10 22h2+8 more
Oct 21, 2026
Oct 13, 2026
N/A· v4
5.5 MEDIUM· v3
N/A· v2
Exposure of sensitive system information to an unauthorized control sphere in Windows Clipboard User Service allows an authorized attacker to disclose information locally.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 16, 2026
Oct 13, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Release of invalid pointer or reference in DNS Server allows an authorized attacker to execute code over a network.
1Microsoft
14Windows 10 1607
Windows 10 1809Windows 10 21h2+11 more
Oct 21, 2026
Oct 13, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Buffer over-read in Windows CD-ROM Driver allows an unauthorized attacker to elevate privileges over a network.