Microsoft Windows 11 23H2 vulnerabilities

CVE-2026-32160 [HIGH] CWE-362 CVE-2026-32160: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-32159 [HIGH] CWE-362 CVE-2026-32159: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-32158 [HIGH] CWE-362 CVE-2026-32158: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-32153 [HIGH] CWE-362 CVE-2026-32153: Use after free in Microsoft Windows Speech allows an authorized attacker to elevate privileges local Use after free in Microsoft Windows Speech allows an authorized attacker to elevate privileges locally.

CVE-2026-20930 [HIGH] CWE-362 CVE-2026-20930: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.

CVE-2026-42979 [HIGH] CWE-362 CVE-2026-42979: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-42977 [HIGH] CWE-362 CVE-2026-42977: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-26168 [HIGH] CWE-362 CVE-2026-26168: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-26167 [HIGH] CWE-362 CVE-2026-26167: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-42991 [HIGH] CWE-362 CVE-2026-42991: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-44800 [HIGH] CWE-362 CVE-2026-44800: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

CVE-2026-45639 [HIGH] CWE-125 CVE-2026-45639: Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a net Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.

CVE-2026-42908 [HIGH] CWE-125 CVE-2026-42908: Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a net Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.

CVE-2026-20844 [HIGH] CWE-362 CVE-2026-20844: Use after free in Windows Clipboard Server allows an unauthorized attacker to elevate privileges loc Use after free in Windows Clipboard Server allows an unauthorized attacker to elevate privileges locally.

CVE-2026-32156 [HIGH] CWE-416 CVE-2026-32156: Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker to execute code locally.

CVE-2025-21420 [HIGH] CWE-59 CVE-2025-21420: Windows Disk Cleanup Tool Elevation of Privilege Vulnerability Windows Disk Cleanup Tool Elevation of Privilege Vulnerability

CVE-2024-30035 [HIGH] CWE-416 CVE-2024-30035: Windows DWM Core Library Elevation of Privilege Vulnerability Windows DWM Core Library Elevation of Privilege Vulnerability

CVE-2026-35422 [MEDIUM] CWE-288 CVE-2026-35422: Authentication bypass using an alternate path or channel in Windows TCP/IP allows an authorized atta Authentication bypass using an alternate path or channel in Windows TCP/IP allows an authorized attacker to bypass a security feature over a network.

CVE-2024-38147 [HIGH] CWE-416 CVE-2024-38147: Microsoft DWM Core Library Elevation of Privilege Vulnerability Microsoft DWM Core Library Elevation of Privilege Vulnerability

CVE-2025-21370 [HIGH] CWE-20 CVE-2025-21370: Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability