Microsoft Windows 11 version 26H1 vulnerabilities

CVE-2026-50305 High · 7.8 CWE-416 Jul 14, 2026

Microsoft Brokering File System Elevation of Privilege Vulnerability

Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

CVE-2026-50302 Medium · 6.5 CWE-295 Jul 14, 2026

Windows Cryptographic Services Security Feature Bypass Vulnerability

Improper certificate validation in Windows Cryptographic Services allows an unauthorized attacker to bypass a security feature over a network.

CVE-2026-49177 Medium · 5.5 CWE-125 Jul 14, 2026

Windows TCP/IP Information Disclosure Vulnerability

Out-of-bounds read in Windows TCP/IP allows an authorized attacker to disclose information locally.

CVE-2026-58640 High · 7.8 CWE-122 Jul 14, 2026

Windows NTFS Remote Code Execution Vulnerability

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

CVE-2026-58635 High · 7.8 CWE-77 Jul 14, 2026

Windows Narrator Braille Elevation of Privilege Vulnerability

Improper neutralization of special elements used in a command ('command injection') in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.

CVE-2026-58614 Medium · 5.5 CWE-125 Jul 14, 2026

Windows Kernel Security Feature Bypass Vulnerability

Out-of-bounds read in Windows Kernel allows an authorized attacker to bypass a security feature locally.

CVE-2026-58610 High · 7.8 CWE-122 Jul 14, 2026

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.

CVE-2026-58609 High · 7.8 CWE-125 Jul 14, 2026

Windows Graphics Component Remote Code Execution Vulnerability

Out-of-bounds read in Microsoft Graphics Component allows an unauthorized attacker to execute code locally.

CVE-2026-58608 High · 7.5 CWE-362 Jul 14, 2026

Windows Print Spooler Remote Code Execution Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to execute code over a network.

CVE-2026-58602 High · 7.8 CWE-416 Jul 14, 2026

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

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

CVE-2026-58601 High · 7.8 CWE-122 Jul 14, 2026

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

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

CVE-2026-58526 High · 7.8 CWE-362 Jul 14, 2026

Windows Storage Elevation of Privilege Vulnerability

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

CVE-2026-57979 High · 7.5 CWE-125 Jul 14, 2026

Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.

CVE-2026-57976 Medium · 6.5 CWE-476 Jul 14, 2026

Windows Active Directory Domain Services Denial of Service Vulnerability

Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.

CVE-2026-57097 Medium · 6.8 CWE-426 Jul 14, 2026

Microsoft XML Security Feature Bypass Vulnerability

Untrusted search path in Microsoft XML allows an unauthorized attacker to bypass a security feature with a physical attack.

CVE-2026-55144 High · 7.1 CWE-325 Jul 14, 2026

Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability

Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.

CVE-2026-55004 High · 7.8 CWE-415 Jul 14, 2026

Windows Print Configuration Elevation of Privilege Vulnerability

Double free in Microsoft Printer Drivers allows an authorized attacker to elevate privileges locally.

CVE-2026-55003 Medium · 6.5 CWE-908 Jul 14, 2026

Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.

CVE-2026-55000 Medium · 6.4 CWE-416 Jul 14, 2026

Windows USB Print Driver Elevation of Privilege Vulnerability

Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.

CVE-2026-54999 High · 8.8 CWE-362 Jul 14, 2026

Windows TCP/IP Remote Code Execution Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over an adjacent network.

CVE-2026-54997 Medium · 5.5 CWE-908 Jul 14, 2026

Windows SMB Information Disclosure Vulnerability

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

CVE-2026-54996 High · 7.0 CWE-125 Jul 14, 2026

Windows USB Print Driver Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-54995 Critical · 9.8 CWE-416 Jul 14, 2026

Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability

Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

CVE-2026-54993 High · 7.8 CWE-122 Jul 14, 2026

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.

CVE-2026-54992 High · 7.8 CWE-122 Jul 14, 2026

Microsoft Message Queuing Queue Manager Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally.