Microsoft Windows Server 2025 (Server Core installation) vulnerabilities

CVE-2026-83830 High · 7.8 CWE-122 Oct 13, 2026

Windows COM+ Event System Service Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83829 High · 7.8 CWE-122 Oct 13, 2026

Microsoft Windows Search Component Elevation of Privilege Vulnerability

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

CVE-2026-83827 High · 7.0 CWE-122 Oct 13, 2026

Windows Bluetooth Port Driver Elevation of Privilege Vulnerability

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

CVE-2026-83826 High · 7.8 CWE-822 Oct 13, 2026

Windows Error Reporting Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

CVE-2026-83798 Medium · 5.5 CWE-20 Oct 13, 2026

Windows Update Stack Spoofing Vulnerability

Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.

CVE-2026-83797 High · 8.8 CWE-125 Oct 13, 2026

Windows Partition Management Driver Remote Code Execution Vulnerability

Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network.

CVE-2026-83796 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-2026-83795 High · 7.5 CWE-122 Oct 13, 2026

Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability

Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network.

CVE-2026-83794 Medium · 5.5 CWE-125 Oct 13, 2026

Windows Portable Device MTP Driver Information Disclosure Vulnerability

Out-of-bounds read in Windows Portable Device MTP Driver allows an authorized attacker to disclose information locally.

CVE-2026-83793 High · 7.0 CWE-59 Oct 13, 2026

Windows Update Orchestrator Service Elevation of Privilege Vulnerability

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

CVE-2026-83792 High · 7.8 CWE-863 Oct 13, 2026

Windows Device Install Service Elevation of Privilege Vulnerability

Incorrect authorization in Windows Device Install Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83789 High · 8.8 CWE-122 Oct 13, 2026

Windows SMB Client Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-83788 Medium · 4.6 CWE-126 Oct 13, 2026

Windows rndismp6.sys Information Disclosure Vulnerability

Buffer over-read in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.

CVE-2026-83787 Medium · 5.5 CWE-288 Oct 13, 2026

Windows DHCP Server Security Feature Bypass Vulnerability

Insufficient verification of data authenticity in Windows DHCP Server allows an authorized attacker to bypass a security feature locally.

CVE-2026-83786 Medium · 4.7 CWE-209 Oct 13, 2026

Windows NTFS Information Disclosure Vulnerability

Generation of error message containing sensitive information in Windows NTFS allows an authorized attacker to disclose information locally.

CVE-2026-83785 High · 7.0 CWE-416 Oct 13, 2026

Windows COM+ Event System Service Elevation of Privilege Vulnerability

Use after free in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83784 High · 8.8 CWE-36 Oct 13, 2026

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability

Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges over a network.

CVE-2026-83783 High · 7.8 CWE-122 Oct 13, 2026

Windows Management Instrumentation Elevation of Privilege Vulnerability

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

CVE-2026-83782 Critical · 9.8 CWE-122 Oct 13, 2026

Windows Shell Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Shell allows an unauthorized attacker to execute code over a network.

CVE-2026-83781 High · 7.8 CWE-170 Oct 13, 2026

Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability

Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83780 Critical · 9.8 CWE-416 Oct 13, 2026

Windows CCFFilter Driver Remote Code Execution Vulnerability

Use after free in Windows CCFFilter Driver allows an unauthorized attacker to execute code over a network.

CVE-2026-83779 High · 7.8 CWE-122 Oct 13, 2026

Windows Installer Elevation of Privilege Vulnerability

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

CVE-2026-83778 High · 8.8 CWE-122 Oct 13, 2026

Microsoft Internet Messaging API Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Internet Messaging API allows an unauthorized attacker to execute code over a network.

CVE-2026-83777 High · 8.8 CWE-122 Oct 13, 2026

Windows Bluetooth Service Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Bluetooth Service allows an unauthorized attacker to elevate privileges over an adjacent network.

CVE-2026-83776 Medium · 6.8 CWE-125 Oct 13, 2026

Windows Bluetooth Driver Elevation of Privilege Vulnerability

Out-of-bounds read in Microsoft Bluetooth Driver allows an unauthorized attacker to elevate privileges with a physical attack.