Microsoft Windows 11 version 23H2 vulnerabilities

CVE-2026-83933 Medium · 5.5 CWE-59 Oct 13, 2026

Windows Update Orchestrator Service Information Disclosure Vulnerability

Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an authorized attacker to disclose information locally.

CVE-2026-83932 High · 7.8 CWE-122 Oct 13, 2026

Windows Group Policy Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Group Policy allows an authorized attacker to elevate privileges locally.

CVE-2026-83931 High · 7.8 CWE-122 Oct 13, 2026

Windows Hyper-V Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.

CVE-2026-83930 High · 7.0 CWE-416 Oct 13, 2026

Windows Update Orchestrator Service Elevation of Privilege Vulnerability

Use after free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83929 High · 8.8 CWE-787 Oct 13, 2026

Windows GDI Remote Code Execution Vulnerability

Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network.

CVE-2026-83928 High · 8.8 CWE-306 Oct 13, 2026

Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerability

Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.

CVE-2026-83927 High · 7.8 CWE-59 Oct 13, 2026

Windows Registry Elevation of Privilege Vulnerability

Improper link resolution before file access ('link following') in Windows Registry allows an authorized attacker to elevate privileges locally.

CVE-2026-83926 Medium · 4.4 CWE-295 Oct 13, 2026

Windows Hello Security Feature Bypass Vulnerability

Improper certificate validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

CVE-2026-83925 Medium · 4.7 CWE-497 Oct 13, 2026

Windows Kernel Information Disclosure Vulnerability

Use of uninitialized resource in Windows Kernel allows an authorized attacker to disclose information locally.

CVE-2026-83924 High · 7.0 CWE-416 Oct 13, 2026

Windows Kernel Elevation of Privilege Vulnerability

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-83923 High · 8.8 CWE-23 Oct 13, 2026

Microsoft OpenSSH for Windows Remote Code Execution Vulnerability

Relative path traversal in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.

CVE-2026-83922 High · 7.8 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-2026-83921 High · 7.0 CWE-122 Oct 13, 2026

Windows Search Service Elevation of Privilege Vulnerability

Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-83920 High · 7.8 CWE-122 Oct 13, 2026

Windows Search Service Elevation of Privilege Vulnerability

Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-83919 High · 7.8 CWE-122 Oct 13, 2026

Microsoft Internet Messaging API Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Internet Messaging API allows an authorized attacker to execute code locally.

CVE-2026-83918 High · 7.8 CWE-190 Oct 13, 2026

Windows Kernel Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-83917 High · 7.0 CWE-416 Oct 13, 2026

Windows ALPC Elevation of Privilege Vulnerability

Use after free in Windows ALPC allows an authorized attacker to elevate privileges locally.

CVE-2026-83916 High · 7.0 CWE-415 Oct 13, 2026

Windows Error Reporting Remote Code Execution Vulnerability

Double free in Windows Error Reporting allows an authorized attacker to execute code locally.

CVE-2026-83915 High · 7.0 CWE-416 Oct 13, 2026

Windows Diagnostic Policy Service Elevation of Privilege Vulnerability

Use after free in Windows Diagnostic Policy Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83914 High · 8.1 CWE-416 Oct 13, 2026

Microsoft XML Remote Code Execution Vulnerability

Use after free in Microsoft XML allows an unauthorized attacker to execute code over a network.

CVE-2026-83913 High · 7.8 CWE-416 Oct 13, 2026

Windows Kernel Elevation of Privilege Vulnerability

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-83912 High · 7.8 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-2026-83911 High · 7.0 CWE-122 Oct 13, 2026

Windows Storage Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.

CVE-2026-83910 Critical · 9.8 CWE-787 Oct 13, 2026

RPC Runtime Library Remote Code Execution Vulnerability

Out-of-bounds write in RPC Runtime allows an unauthorized attacker to execute code over a network.

CVE-2026-83909 Medium · 4.7 CWE-497 Oct 13, 2026

Windows Win32 Kernel Subsystem Information Disclosure Vulnerability

Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.