Microsoft Windows 11 26h1 vulnerabilities

CVE-2026-68836 High · 7.8 CWE-122 Oct 13, 2026

Windows kernel32.dll Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows kernel32.dll allows an authorized attacker to elevate privileges locally.

CVE-2026-62879 Medium · 5.5 CWE-306 Oct 13, 2026

Windows SmartScreen Tampering Vulnerability

Missing authentication for critical function in Windows SmartScreen allows an authorized attacker to perform tampering locally.

CVE-2026-62687 Medium · 5.5 CWE-59 Oct 13, 2026

Windows Backup Engine Information Disclosure Vulnerability

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

CVE-2026-59116 Medium · 6.8 CWE-327 Oct 13, 2026

Windows Remote Desktop Security Feature Bypass Vulnerability

Use of a broken or risky cryptographic algorithm in Windows Remote Desktop allows an unauthorized attacker to bypass a security feature over a network.

CVE-2026-49785 High · 7.8 CWE-404 Oct 13, 2026

UEFI Secure Boot Security Feature Bypass Vulnerability

Improper resource shutdown or release in Windows UEFI allows an authorized attacker to bypass a security feature locally.

CVE-2026-109453 High · 7.0 CWE-122 Oct 13, 2026

Virtual Hard Disk (VHD) Miniport Driver Elevation of Privilege Vulnerability

Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-108468 High · 7.0 CWE-416 Oct 13, 2026

Windows Installer Elevation of Privilege Vulnerability

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

CVE-2026-108467 High · 8.8 CWE-122 Oct 13, 2026

Microsoft PostScript Printer Driver Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an authorized attacker to execute code over a network.

CVE-2026-108466 Medium · 5.3 CWE-125 Oct 13, 2026

Windows Kernel Denial of Service Vulnerability

Out-of-bounds read in Windows Kernel allows an unauthorized attacker to deny service over a network.

CVE-2026-108465 High · 7.0 CWE-416 Oct 13, 2026

Windows Update Delivery Optimization Elevation of Privilege Vulnerability

Use after free in Windows Update Delivery Optimization allows an authorized attacker to elevate privileges locally.

CVE-2026-108464 High · 7.0 CWE-416 Oct 13, 2026

Software Protection Platform (SPP) Elevation of Privilege Vulnerability

Use after free in Software Protection Platform (SPP) allows an authorized attacker to elevate privileges locally.

CVE-2026-108463 High · 8.8 CWE-41 Oct 13, 2026

Windows SmartScreen Security Feature Bypass Vulnerability

Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.

CVE-2026-108462 Medium · 5.5 CWE-497 Oct 13, 2026

Windows Kernel Information Disclosure Vulnerability

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

CVE-2026-108461 High · 7.0 CWE-416 Oct 13, 2026

Windows Broadcast DVR User Service Elevation of Privilege Vulnerability

Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.

CVE-2026-108460 High · 8.1 CWE-416 Oct 13, 2026

Windows Message Queuing Remote Code Execution Vulnerability

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

CVE-2026-108458 High · 8.8 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-2026-108399 High · 7.2 CWE-122 Oct 13, 2026

Windows Hyper-V Elevation of Privilege Vulnerability

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

CVE-2026-108396 High · 7.0 CWE-367 Oct 13, 2026

Windows Modern Device Management (MDM) Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

CVE-2026-108136 High · 7.8 CWE-416 Oct 13, 2026

Microsoft Windows Search Component Elevation of Privilege Vulnerability

Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

CVE-2026-108135 High · 7.0 CWE-59 Oct 13, 2026

Windows Backup Engine Elevation of Privilege Vulnerability

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

CVE-2026-108130 High · 7.8 CWE-122 Oct 13, 2026

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

CVE-2026-108129 Medium · 6.5 CWE-125 Oct 13, 2026

Role: DNS Server Information Disclosure Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

CVE-2026-108128 Medium · 6.5 CWE-125 Oct 13, 2026

Role: DNS Server Information Disclosure Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

CVE-2026-108127 Medium · 6.5 CWE-125 Oct 13, 2026

Role: DNS Server Information Disclosure Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

CVE-2026-105733 High · 8.8 CWE-863 Oct 13, 2026

Windows Hyper-V Remote Code Execution Vulnerability

Improper access control in Windows Hyper-V allows an authorized attacker to execute code locally.