Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-85791 [HIGH] CWE-122 CVE-2026-85791: Heap-based buffer overflow in Windows Encrypting File System (EFS) allows an authorized attacker to Heap-based buffer overflow in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-41108 [HIGH] CWE-122 CVE-2026-41108: Heap-based buffer overflow in Microsoft Windows DNS allows an authorized attacker to elevate privile Heap-based buffer overflow in Microsoft Windows DNS allows an authorized attacker to elevate privileges locally.

CVE-2026-69970 [HIGH] CWE-122 CVE-2026-69970: Heap-based buffer overflow in Microsoft Streaming Service allows an authorized attacker to elevate p Heap-based buffer overflow in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally.

CVE-2026-68884 [HIGH] CWE-122 CVE-2026-68884: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-68897 [HIGH] CWE-122 CVE-2026-68897: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges locally.

CVE-2026-70568 [HIGH] CWE-122 CVE-2026-70568: Heap-based buffer overflow in Windows Defender Firewall Service allows an authorized attacker to ele Heap-based buffer overflow in Windows Defender Firewall Service allows an authorized attacker to elevate privileges locally.

CVE-2026-69621 [HIGH] CWE-122 CVE-2026-69621: Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privilege Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.

CVE-2026-69394 [HIGH] CWE-122 CVE-2026-69394: Heap-based buffer overflow in Windows Audio Service allows an authorized attacker to elevate privile Heap-based buffer overflow in Windows Audio Service allows an authorized attacker to elevate privileges locally.

CVE-2026-62753 [HIGH] CWE-122 CVE-2026-62753: Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges l Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.

CVE-2026-45653 [HIGH] CWE-122 CVE-2026-45653: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-96868 [HIGH] CWE-122 CVE-2026-96868: Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges loc Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-83871 [HIGH] CWE-122 CVE-2026-83871: Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker to elevate privilege Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.

CVE-2026-84014 [HIGH] CWE-122 CVE-2026-84014: Heap-based buffer overflow in Windows Device Association Service allows an authorized attacker to el Heap-based buffer overflow in Windows Device Association Service allows an authorized attacker to elevate privileges locally.

CVE-2026-20812 [MEDIUM] CWE-20 CVE-2026-20812: Improper input validation in Windows LDAP - Lightweight Directory Access Protocol allows an authoriz Improper input validation in Windows LDAP - Lightweight Directory Access Protocol allows an authorized attacker to perform tampering over a network.

CVE-2026-97828 [MEDIUM] CWE-126 CVE-2026-97828: Buffer over-read in DNS Server allows an authorized attacker to disclose information over a network. Buffer over-read in DNS Server allows an authorized attacker to disclose information over a network.

CVE-2025-55698 [HIGH] CWE-476 CVE-2025-55698: Null pointer dereference in Windows DirectX allows an authorized attacker to deny service over a net Null pointer dereference in Windows DirectX allows an authorized attacker to deny service over a network.

CVE-2025-59200 [HIGH] CWE-73 CVE-2025-59200: Concurrent execution using shared resource with improper synchronization ('race condition') in Data Concurrent execution using shared resource with improper synchronization ('race condition') in Data Sharing Service Client allows an unauthorized attacker to perform spoofing locally.

CVE-2026-20816 [HIGH] CWE-367 CVE-2026-20816: Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2025-48004 [HIGH] CWE-416 CVE-2025-48004: Use after free in Microsoft Brokering File System allows an unauthorized attacker to elevate privile Use after free in Microsoft Brokering File System allows an unauthorized attacker to elevate privileges locally.

CVE-2025-55693 [HIGH] CWE-416 CVE-2025-55693: Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally. Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.