Microsoft Windows Server 2025 vulnerabilities

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.

CVE-2026-83908 High · 7.0 CWE-763 Oct 13, 2026

RPC Runtime Elevation of Privilege Vulnerability

Release of invalid pointer or reference in RPC Runtime allows an authorized attacker to elevate privileges locally.

CVE-2026-83906 Medium · 6.5 CWE-303 Oct 13, 2026

Windows Shell Spoofing Vulnerability

Incorrect implementation of authentication algorithm in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

CVE-2026-83905 Medium · 4.7 CWE-497 Oct 13, 2026

Windows Shell Information Disclosure Vulnerability

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

CVE-2026-83904 Medium · 5.5 CWE-125 Oct 13, 2026

HID Parser Library Information Disclosure Vulnerability

Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

CVE-2026-83903 High · 7.8 CWE-122 Oct 13, 2026

Windows Direct Composition Elevation of Privilege Vulnerability

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

CVE-2026-83902 High · 7.8 CWE-122 Oct 13, 2026

Windows Direct Composition Elevation of Privilege Vulnerability

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

CVE-2026-83901 High · 7.0 CWE-416 Oct 13, 2026

Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability

Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

CVE-2026-83900 High · 7.0 CWE-416 Oct 13, 2026

Windows Bind Filter Driver Elevation of Privilege Vulnerability

Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-83899 High · 7.0 CWE-362 Oct 13, 2026

Windows Installer Elevation of Privilege Vulnerability

Improper privilege management in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-83898 Medium · 5.5 CWE-125 Oct 13, 2026

HID Parser Library Information Disclosure Vulnerability

Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

CVE-2026-83897 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.

CVE-2026-83896 High · 7.8 CWE-122 Oct 13, 2026

Windows Direct Composition Elevation of Privilege Vulnerability

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

CVE-2026-83895 Medium · 6.8 CWE-122 Oct 13, 2026

Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-83893 Medium · 5.5 CWE-497 Oct 13, 2026

Windows Clipboard User Service Information Disclosure Vulnerability

Exposure of sensitive system information to an unauthorized control sphere in Windows Clipboard User Service allows an authorized attacker to disclose information locally.

CVE-2026-83892 Medium · 5.5 CWE-125 Oct 13, 2026

Windows Human Interface Device Information Disclosure Vulnerability

Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

CVE-2026-83889 High · 8.8 CWE-763 Oct 13, 2026

Windows DNS Server Remote Code Execution Vulnerability

Release of invalid pointer or reference in DNS Server allows an authorized attacker to execute code over a network.