Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-70012 [HIGH] CWE-416 CVE-2026-70012: 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-2026-69976 [HIGH] CWE-416 CVE-2026-69976: 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-2026-69997 [HIGH] CWE-416 CVE-2026-69997: 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-2026-69553 [HIGH] CWE-862 CVE-2026-69553: Missing authorization in Windows Hyper-V allows an authorized attacker to elevate privileges over a Missing authorization in Windows Hyper-V allows an authorized attacker to elevate privileges over a network.

CVE-2026-26178 [HIGH] CWE-190 CVE-2026-26178: Integer size truncation in Windows Advanced Rasterization Platform (WARP) allows an unauthorized att Integer size truncation in Windows Advanced Rasterization Platform (WARP) allows an unauthorized attacker to elevate privileges locally.

CVE-2026-21255 [HIGH] CWE-284 CVE-2026-21255: Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security featur Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally.

CVE-2026-42986 [HIGH] CWE-416 CVE-2026-42986: Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges l Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

CVE-2026-70563 [HIGH] CWE-59 CVE-2026-70563: Improper link resolution before file access ('link following') in Windows Shell allows an unauthoriz Improper link resolution before file access ('link following') in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

CVE-2026-69807 [HIGH] CWE-22 CVE-2026-69807: Improper limitation of a pathname to a restricted directory ('path traversal') in Windows PowerShell Improper limitation of a pathname to a restricted directory ('path traversal') in Windows PowerShell allows an authorized attacker to elevate privileges over a network.

CVE-2026-40400 [HIGH] CWE-23 CVE-2026-40400: Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a n Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.

CVE-2026-68827 [HIGH] CWE-122 CVE-2026-68827: Integer underflow (wrap or wraparound) in Windows GDI+ allows an authorized attacker to elevate priv Integer underflow (wrap or wraparound) in Windows GDI+ allows an authorized attacker to elevate privileges over a network.

CVE-2026-70031 [HIGH] CWE-122 CVE-2026-70031: Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to deny service over a n Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to deny service over a network.

CVE-2026-83860 [HIGH] CWE-121 CVE-2026-83860: Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a ne Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.

CVE-2026-21236 [HIGH] CWE-122 CVE-2026-21236: Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized att Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-83830 [HIGH] CWE-122 CVE-2026-83830: Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to ele Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

CVE-2026-70112 [HIGH] CWE-122 CVE-2026-70112: Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code lo Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code locally.

CVE-2026-83881 [HIGH] CWE-122 CVE-2026-83881: Heap-based buffer overflow in Windows exFAT File System allows an authorized attacker to elevate pri Heap-based buffer overflow in Windows exFAT File System allows an authorized attacker to elevate privileges locally.

CVE-2026-70093 [HIGH] CWE-122 CVE-2026-70093: Heap-based buffer overflow in Windows Rich Text Edit Control allows an authorized attacker to elevat Heap-based buffer overflow in Windows Rich Text Edit Control allows an authorized attacker to elevate privileges locally.

CVE-2026-102215 [HIGH] CWE-122 CVE-2026-102215: Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an auth Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-102218 [HIGH] CWE-122 CVE-2026-102218: Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an auth Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.