Microsoft Windows 11 25H2 vulnerabilities

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-2026-50361 [HIGH] CWE-362 CVE-2026-50361: Double free in Microsoft Brokering File System allows an authorized attacker to elevate privileges l Double free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

CVE-2026-50457 [HIGH] CWE-362 CVE-2026-50457: Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally. Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.

CVE-2026-54125 [HIGH] CWE-362 CVE-2026-54125: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

CVE-2026-50427 [HIGH] CWE-362 CVE-2026-50427: Use after free in Content Delivery Manager allows an authorized attacker to elevate privileges local Use after free in Content Delivery Manager allows an authorized attacker to elevate privileges locally.

CVE-2026-58628 [HIGH] CWE-362 CVE-2026-58628: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Wireless Networking 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-2026-49808 [HIGH] CWE-362 CVE-2026-49808: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-58526 [HIGH] CWE-362 CVE-2026-58526: Use after free in Windows Storage allows an authorized attacker to elevate privileges locally. Use after free in Windows Storage 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-2026-58539 [HIGH] CWE-125 CVE-2026-58539: 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-2026-50463 [HIGH] CWE-125 CVE-2026-50463: Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a network.

CVE-2026-57979 [HIGH] CWE-125 CVE-2026-57979: 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-2026-25167 [HIGH] CWE-416 CVE-2026-25167: Use after free in Microsoft Brokering File System allows an unauthorized attacker to elevate privile Use after free in Microsoft Brokering File System 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.