Microsoft Windows 10 21H2 vulnerabilities

CVE-2025-21221 [HIGH] CWE-122 CVE-2025-21221: Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute c Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

CVE-2025-21205 [HIGH] CWE-122 CVE-2025-21205: Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute c Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

CVE-2024-38053 [HIGH] CWE-416 CVE-2024-38053: Windows Layer-2 Bridge Network Driver Remote Code Execution Vulnerability Windows Layer-2 Bridge Network Driver Remote Code Execution Vulnerability

CVE-2025-21409 [HIGH] CWE-122 CVE-2025-21409: Windows Telephony Service Remote Code Execution Vulnerability Windows Telephony Service Remote Code Execution Vulnerability

CVE-2025-21339 [HIGH] CWE-122 CVE-2025-21339: Windows Telephony Service Remote Code Execution Vulnerability Windows Telephony Service Remote Code Execution Vulnerability

CVE-2025-21411 [HIGH] CWE-122 CVE-2025-21411: Windows Telephony Service Remote Code Execution Vulnerability Windows Telephony Service Remote Code Execution Vulnerability

CVE-2025-21413 [HIGH] CWE-122 CVE-2025-21413: Windows Telephony Service Remote Code Execution Vulnerability Windows Telephony Service Remote Code Execution Vulnerability

CVE-2026-50509 [HIGH] CWE-502 CVE-2026-50509: Deserialization of untrusted data in Windows Wireless Wide Area Network Service allows an authorized Deserialization of untrusted data in Windows Wireless Wide Area Network Service allows an authorized attacker to elevate privileges locally.

CVE-2024-43518 [HIGH] CWE-122 CVE-2024-43518: Windows Telephony Server Remote Code Execution Vulnerability Windows Telephony Server Remote Code Execution Vulnerability

CVE-2025-53131 [HIGH] CWE-122 CVE-2025-53131: Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a n Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.

CVE-2026-83797 [HIGH] CWE-125 CVE-2026-83797: Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network.

CVE-2026-69494 [HIGH] CWE-122 CVE-2026-69494: Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.

CVE-2026-69598 [HIGH] CWE-131 CVE-2026-69598: Incorrect calculation of buffer size in Windows iSCSI allows an unauthorized attacker to execute cod Incorrect calculation of buffer size in Windows iSCSI allows an unauthorized attacker to execute code over a network.

CVE-2025-58718 [HIGH] CWE-416 CVE-2025-58718: Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a netwo Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2025-54916 [HIGH] CWE-121 CVE-2025-54916: Stack-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally. Stack-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

CVE-2025-21224 [HIGH] CWE-416 CVE-2025-21224: Windows Line Printer Daemon (LPD) Service Remote Code Execution Vulnerability Windows Line Printer Daemon (LPD) Service Remote Code Execution Vulnerability

CVE-2026-20925 [MEDIUM] CWE-73 CVE-2026-20925: External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spo External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

CVE-2024-38049 [HIGH] CWE-73 CVE-2024-38049: Windows Distributed Transaction Coordinator Remote Code Execution Vulnerability Windows Distributed Transaction Coordinator Remote Code Execution Vulnerability

CVE-2026-42989 [HIGH] CWE-59 CVE-2026-42989: Improper link resolution before file access ('link following') in Winlogon allows an authorized atta Improper link resolution before file access ('link following') in Winlogon allows an authorized attacker to elevate privileges locally.

CVE-2025-58722 [HIGH] CWE-122 CVE-2025-58722: Heap-based buffer overflow in Windows DWM allows an authorized attacker to elevate privileges locall Heap-based buffer overflow in Windows DWM allows an authorized attacker to elevate privileges locally.