Microsoft Windows 11 Version 26H2 vulnerabilities

CVE-2026-69850 [HIGH] CWE-822 CVE-2026-69850: Untrusted pointer dereference in Windows Certificates allows an authorized attacker to elevate privi Untrusted pointer dereference in Windows Certificates allows an authorized attacker to elevate privileges locally.

CVE-2026-70566 [HIGH] CWE-476 CVE-2026-70566: Null pointer dereference in Windows Schannel allows an authorized attacker to elevate privileges loc Null pointer dereference in Windows Schannel allows an authorized attacker to elevate privileges locally.

CVE-2026-84017 [HIGH] CWE-476 CVE-2026-84017: Null pointer dereference in Windows Routing and Remote Access Service (RRAS) allows an unauthorized Null pointer dereference in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.

CVE-2026-88126 [HIGH] CWE-822 CVE-2026-88126: Untrusted pointer dereference in WebDAV allows an authorized attacker to elevate privileges locally. Untrusted pointer dereference in WebDAV allows an authorized attacker to elevate privileges locally.

CVE-2026-96933 [HIGH] CWE-822 CVE-2026-96933: Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

CVE-2026-96847 [HIGH] CWE-822 CVE-2026-96847: Untrusted pointer dereference in WebDAV allows an authorized attacker to elevate privileges locally. Untrusted pointer dereference in WebDAV allows an authorized attacker to elevate privileges locally.

CVE-2026-96953 [HIGH] CWE-476 CVE-2026-96953: Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an author Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to execute code locally.

CVE-2026-85858 [HIGH] CWE-125 CVE-2026-85858: Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privil Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

CVE-2026-88189 [HIGH] CWE-125 CVE-2026-88189: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-88180 [HIGH] CWE-125 CVE-2026-88180: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-96306 [HIGH] CWE-125 CVE-2026-96306: Out-of-bounds read in Windows Sysmain Service allows an authorized attacker to elevate privileges lo Out-of-bounds read in Windows Sysmain Service allows an authorized attacker to elevate privileges locally.

CVE-2026-88177 [HIGH] CWE-125 CVE-2026-88177: Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges l Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-83708 [HIGH] CWE-121 CVE-2026-83708: Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-97817 [MEDIUM] CWE-122 CVE-2026-97817: Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network.

CVE-2026-85369 [HIGH] CWE-125 CVE-2026-85369: Out-of-bounds read in Windows Hyper-V allows an authorized attacker to elevate privileges locally. Out-of-bounds read in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVE-2026-87705 [HIGH] CWE-940 CVE-2026-87705: Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized attacker to bypass a security feature over an adjacent network.

CVE-2026-108399 [HIGH] CWE-122 CVE-2026-108399: Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges lo Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVE-2026-83911 [HIGH] CWE-122 CVE-2026-83911: Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges lo Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.

CVE-2026-102189 [HIGH] CWE-122 CVE-2026-102189: Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges lo Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.

CVE-2026-100225 [HIGH] CWE-122 CVE-2026-100225: Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges lo Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.