Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-57090 [CRITICAL] CWE-122 CVE-2026-57090: Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

CVE-2025-26670 [HIGH] CWE-416 CVE-2025-26670: Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attack Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to execute code over a network.

CVE-2026-57089 [CRITICAL] CWE-416 CVE-2026-57089: Use after free in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized at Use after free in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to execute code over a network.

CVE-2026-96096 [CRITICAL] CWE-122 CVE-2026-96096: Heap-based buffer overflow in Windows Media Player allows an unauthorized attacker to execute code o Heap-based buffer overflow in Windows Media Player allows an unauthorized attacker to execute code over a network.

CVE-2026-25177 [HIGH] CWE-641 CVE-2026-25177: Improper restriction of names for files and other resources in Active Directory Domain Services allo Improper restriction of names for files and other resources in Active Directory Domain Services allows an authorized attacker to elevate privileges over a network.

CVE-2026-69485 [HIGH] CWE-908 CVE-2026-69485: Use of uninitialized resource in Remote Desktop Client allows an authorized attacker to execute code Use of uninitialized resource in Remote Desktop Client allows an authorized attacker to execute code over a network.

CVE-2026-62790 [HIGH] CWE-122 CVE-2026-62790: Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.

CVE-2026-62800 [HIGH] CWE-122 CVE-2026-62800: Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.

CVE-2026-88165 [HIGH] CWE-787 CVE-2026-88165: Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute cod Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.

CVE-2026-50502 [HIGH] CWE-1220 CVE-2026-50502: Insufficient granularity of access control in Windows Event Logging Service allows an authorized att Insufficient granularity of access control in Windows Event Logging Service allows an authorized attacker to execute code over a network.

CVE-2023-36606 [HIGH] CWE-400 CVE-2023-36606: Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

CVE-2023-28250 [CRITICAL] CWE-191 CVE-2023-28250: Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability

CVE-2023-21803 [CRITICAL] CWE-190 CVE-2023-21803: Windows iSCSI Discovery Service Remote Code Execution Vulnerability Windows iSCSI Discovery Service Remote Code Execution Vulnerability

CVE-2023-35366 [CRITICAL] CWE-20 CVE-2023-35366: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

CVE-2023-35367 [CRITICAL] CWE-20 CVE-2023-35367: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

CVE-2026-105723 [CRITICAL] CWE-822 CVE-2026-105723: Untrusted pointer dereference in Windows Distributed File System (DFS) allows an unauthorized attack Untrusted pointer dereference in Windows Distributed File System (DFS) allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-69491 [CRITICAL] CWE-122 CVE-2026-69491: Heap-based buffer overflow in Windows Microsoft DirectMusic allows an unauthorized attacker to execu Heap-based buffer overflow in Windows Microsoft DirectMusic allows an unauthorized attacker to execute code over a network.

CVE-2026-73009 [CRITICAL] CWE-416 CVE-2026-73009: Use after free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to Use after free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network.

CVE-2026-69276 [CRITICAL] CWE-122 CVE-2026-69276: Integer underflow (wrap or wraparound) in Microsoft UxTheme Library (uxtheme.dll) allows an unauthor Integer underflow (wrap or wraparound) in Microsoft UxTheme Library (uxtheme.dll) allows an unauthorized attacker to execute code over a network.

CVE-2026-69586 [CRITICAL] CWE-122 CVE-2026-69586: Integer overflow or wraparound in Microsoft Windows PDF allows an unauthorized attacker to execute c Integer overflow or wraparound in Microsoft Windows PDF allows an unauthorized attacker to execute code over a network.