Microsoft Windows 11 version 26H1 vulnerabilities
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Published CVEs affecting Microsoft Windows 11 version 26H1: 2565 record(s), with affected versions and fixes.
CVE-2026-70056
High · 7.0
CWE-416 Oct 13, 2026
Windows Update Service Elevation of Privilege Vulnerability
Use after free in Windows Update Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70055
Medium · 5.5
CWE-497 Oct 13, 2026
Windows Cryptographic Services Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Windows Cryptographic Services allows an authorized attacker to disclose information locally.
CVE-2026-70054
High · 7.8
CWE-122 Oct 13, 2026
Windows NetBIOS Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows NetBIOS allows an authorized attacker to elevate privileges locally.
CVE-2026-70052
High · 7.8
CWE-122 Oct 13, 2026
Microsoft PowerShell Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows PowerShell allows an authorized attacker to execute code locally.
CVE-2026-70051
High · 7.8
CWE-843 Oct 13, 2026
Windows SmartScreen Elevation of Privilege Vulnerability
Access of resource using incompatible type ('type confusion') in Windows SmartScreen allows an authorized attacker to elevate privileges locally.
CVE-2026-70048
High · 7.8
CWE-122 Oct 13, 2026
Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-70045
High · 7.0
CWE-416 Oct 13, 2026
Windows Work Folders Elevation of Privilege Vulnerability
Use after free in Windows Work Folders allows an authorized attacker to elevate privileges locally.
CVE-2026-70044
Medium · 5.5
CWE-125 Oct 13, 2026
Microsoft Windows Media Foundation Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Windows Media Foundation allows an unauthorized attacker to disclose information locally.
CVE-2026-70041
Medium · 5.5
CWE-126 Oct 13, 2026
Windows CD-ROM Driver Information Disclosure Vulnerability
Buffer over-read in Windows CD-ROM Driver allows an authorized attacker to disclose information locally.
CVE-2026-70038
High · 8.1
CWE-122 Oct 13, 2026
Windows iSCSI Remote Code Execution Vulnerability
Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.
CVE-2026-70031
High · 7.5
CWE-122 Oct 13, 2026
Windows iSCSI Denial of Service Vulnerability
Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to deny service over a network.
CVE-2026-70027
High · 7.8
CWE-122 Oct 13, 2026
Windows Subsystem for Linux Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
CVE-2026-70026
High · 7.0
CWE-416 Oct 13, 2026
Windows Secure Kernel Mode Elevation of Privilege Vulnerability
Use after free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
CVE-2026-70025
Medium · 6.5
CWE-416 Oct 13, 2026
Windows Netlogon Denial of Service Vulnerability
Use after free in Windows Netlogon allows an authorized attacker to deny service over a network.
CVE-2026-70024
Critical · 9.8
CWE-20 Oct 13, 2026
Windows Internet Information Services Remote Code Execution Vulnerability
Stack-based buffer overflow in Windows Internet Information Services allows an unauthorized attacker to execute code over a network.
CVE-2026-70023
High · 7.8
CWE-416 Oct 13, 2026
Windows Hyper-V Elevation of Privilege Vulnerability
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
CVE-2026-70021
High · 7.0
CWE-416 Oct 13, 2026
Windows Direct Composition Elevation of Privilege Vulnerability
Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
CVE-2026-70017
Medium · 5.5
CWE-843 Oct 13, 2026
Windows Secure Kernel Mode Information Disclosure Vulnerability
Access of resource using incompatible type ('type confusion') in Windows Secure Kernel Mode allows an authorized attacker to disclose information locally.
CVE-2026-70015
High · 7.8
CWE-122 Oct 13, 2026
Windows Local Security Authority Subsystem Service (LSASS) Elevation of Privilege Vulnerability
Use after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to elevate privileges locally.
CVE-2026-70014
High · 7.5
CWE-416 Oct 13, 2026
Windows Cryptographic Services Remote Code Execution Vulnerability
Use after free in Windows Cryptographic Services allows an authorized attacker to execute code over a network.
CVE-2026-70013
High · 8.1
CWE-416 Oct 13, 2026
Windows iSCSI Remote Code Execution Vulnerability
Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.
CVE-2026-70012
High · 7.5
CWE-416 Oct 13, 2026
Remote Desktop Client Remote Code Execution Vulnerability
Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-70011
Medium · 5.5
CWE-125 Oct 13, 2026
Windows IP Over USB Service Information Disclosure Vulnerability
Out-of-bounds read in Windows IP Over USB Service allows an authorized attacker to disclose information locally.
CVE-2026-70010
High · 7.8
CWE-122 Oct 13, 2026
Windows NTFS Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-70008
High · 7.8
CWE-190 Oct 13, 2026
Windows IP Over USB Service Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows IP Over USB Service allows an authorized attacker to elevate privileges locally.