Microsoft Windows 11 Version 26H1 vulnerabilities

CVE-2026-69521 [HIGH] CWE-190 CVE-2026-69521: Integer overflow or wraparound in Windows iSCSI allows an unauthorized attacker to execute code over Integer overflow or wraparound in Windows iSCSI allows an unauthorized attacker to execute code over a network.

CVE-2026-69619 [HIGH] CWE-125 CVE-2026-69619: Out-of-bounds read in Windows exFAT File System allows an authorized attacker to elevate privileges Out-of-bounds read in Windows exFAT File System allows an authorized attacker to elevate privileges over a network.

CVE-2026-85936 [HIGH] CWE-122 CVE-2026-85936: Double free in Windows Shell allows an unauthorized attacker to execute code over a network. Double free in Windows Shell allows an unauthorized attacker to execute code over a network.

CVE-2026-105733 [HIGH] CWE-1419 CVE-2026-105733: Improper access control in Windows Hyper-V allows an authorized attacker to execute code locally. Improper access control in Windows Hyper-V allows an authorized attacker to execute code locally.

CVE-2026-96917 [HIGH] CWE-122 CVE-2026-96917: Heap-based buffer overflow in Windows PCI Bus Driver allows an authorized attacker to elevate privil Heap-based buffer overflow in Windows PCI Bus Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-83996 [HIGH] CWE-122 CVE-2026-83996: Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privi Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

CVE-2026-40415 [HIGH] CWE-416 CVE-2026-40415: Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network. Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.

CVE-2026-108460 [HIGH] CWE-416 CVE-2026-108460: Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a net Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.

CVE-2026-70038 [HIGH] CWE-122 CVE-2026-70038: Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network. Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.

CVE-2026-69524 [HIGH] CWE-416 CVE-2026-69524: Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code o Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.

CVE-2026-69546 [HIGH] CWE-416 CVE-2026-69546: Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code o Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.

CVE-2026-83997 [HIGH] CWE-416 CVE-2026-83997: Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a net Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.

CVE-2026-69732 [HIGH] CWE-122 CVE-2026-69732: Heap-based buffer overflow in Windows Link Layer Topology Discovery Protocol allows an unauthorized Heap-based buffer overflow in Windows Link Layer Topology Discovery Protocol allows an unauthorized attacker to execute code over a network.

CVE-2026-69325 [HIGH] CWE-122 CVE-2026-69325: Heap-based buffer overflow in Microsoft JScript allows an unauthorized attacker to execute code over Heap-based buffer overflow in Microsoft JScript allows an unauthorized attacker to execute code over a network.

CVE-2026-62781 [HIGH] CWE-122 CVE-2026-62781: Heap-based buffer overflow in RPC Runtime allows an unauthorized attacker to execute code over a net Heap-based buffer overflow in RPC Runtime allows an unauthorized attacker to execute code over a network.

CVE-2026-62819 [HIGH] CWE-416 CVE-2026-62819: Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

CVE-2026-70570 [HIGH] CWE-416 CVE-2026-70570: Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

CVE-2026-59134 [HIGH] CWE-20 CVE-2026-59134: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-61363 [HIGH] CWE-20 CVE-2026-61363: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-69913 [HIGH] CWE-416 CVE-2026-69913: Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network. Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.