Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-88149 [HIGH] CWE-415 CVE-2026-88149: Double free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevat Double free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-34341 [HIGH] CWE-415 CVE-2026-34341: Double free in Windows Link-Layer Discovery Protocol (LLDP) allows an authorized attacker to elevate Double free in Windows Link-Layer Discovery Protocol (LLDP) allows an authorized attacker to elevate privileges locally.

CVE-2025-58727 [HIGH] CWE-362 CVE-2025-58727: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.

CVE-2025-32715 [MEDIUM] CWE-125 CVE-2025-32715: Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.

CVE-2026-84018 [HIGH] CWE-367 CVE-2026-84018: Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileg Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

CVE-2026-32086 [HIGH] CWE-362 CVE-2026-32086: Concurrent execution using shared resource with improper synchronization ('race condition') in Funct Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.

CVE-2026-32150 [HIGH] CWE-362 CVE-2026-32150: Concurrent execution using shared resource with improper synchronization ('race condition') in Funct Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.

CVE-2026-32091 [HIGH] CWE-362 CVE-2026-32091: Concurrent execution using shared resource with improper synchronization ('race condition') in Micro Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Brokering File System allows an unauthorized attacker to elevate privileges locally.

CVE-2026-87710 [HIGH] CWE-362 CVE-2026-87710: Improper access control in Microsoft Local Security Authority Server (lsasrv) allows an authorized a Improper access control in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges locally.

CVE-2023-32043 [MEDIUM] CWE-327 CVE-2023-32043: Windows Remote Desktop Security Feature Bypass Vulnerability Windows Remote Desktop Security Feature Bypass Vulnerability

CVE-2024-43487 [MEDIUM] CWE-693 CVE-2024-43487: Windows Mark of the Web Security Feature Bypass Vulnerability Windows Mark of the Web Security Feature Bypass Vulnerability

CVE-2026-72942 [MEDIUM] CWE-125 CVE-2026-72942: Out-of-bounds read in Windows Spaceport.sys allows an unauthorized attacker to disclose information Out-of-bounds read in Windows Spaceport.sys allows an unauthorized attacker to disclose information over a network.

CVE-2026-54126 [MEDIUM] CWE-125 CVE-2026-54126: 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-2025-58739 [MEDIUM] CWE-200 CVE-2025-58739: Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an unauth Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an unauthorized attacker to perform spoofing over a network.

CVE-2026-62750 [MEDIUM] CWE-187 CVE-2026-62750: Partial string comparison in Windows HTTP Protocol Stack allows an unauthorized attacker to perform Partial string comparison in Windows HTTP Protocol Stack allows an unauthorized attacker to perform tampering over an adjacent network.

CVE-2026-85847 [MEDIUM] CWE-125 CVE-2026-85847: Out-of-bounds read in Windows Print Spooler Components allows an unauthorized attacker to disclose i Out-of-bounds read in Windows Print Spooler Components allows an unauthorized attacker to disclose information over a network.

CVE-2025-60723 [MEDIUM] CWE-362 CVE-2025-60723: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DirectX allows an authorized attacker to deny service over a network.

CVE-2023-36720 [HIGH] CVE-2023-36720: Windows Mixed Reality Developer Tools Denial of Service Vulnerability Windows Mixed Reality Developer Tools Denial of Service Vulnerability

CVE-2026-62757 [MEDIUM] CWE-347 CVE-2026-62757: Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to bypass a security feature over a network.

CVE-2023-36912 [HIGH] CWE-20 CVE-2023-36912: Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability