Microsoft Windows 10 21H2 vulnerabilities

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-2026-32159 [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-2026-26167 [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-2026-26168 [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-2026-62782 [HIGH] CWE-125 CVE-2026-62782: Out-of-bounds read in Windows SMB Client allows an unauthorized attacker to disclose information ove Out-of-bounds read in Windows SMB Client 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-2026-57979 [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-2026-85797 [HIGH] CWE-20 CVE-2026-85797: Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information over a net Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information over a network.

CVE-2023-28238 [HIGH] CWE-591 CVE-2023-28238: Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability

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-2025-55326 [HIGH] CWE-416 CVE-2025-55326: Use after free in Connected Devices Platform Service (Cdpsvc) allows an unauthorized attacker to exe Use after free in Connected Devices Platform Service (Cdpsvc) allows an unauthorized attacker to execute code over a network.

CVE-2025-27484 [HIGH] CWE-591 CVE-2025-27484: Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges 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.