Microsoft Windows 11 26H1 vulnerabilities

CVE-2026-88101 [HIGH] CWE-1390 CVE-2026-88101: Weak authentication in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate Weak authentication in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.

CVE-2026-50415 [HIGH] CWE-200 CVE-2026-50415: Exposure of sensitive information to an unauthorized actor in Windows Media allows an unauthorized a Exposure of sensitive information to an unauthorized actor in Windows Media allows an unauthorized attacker to disclose information over a network.

CVE-2026-77896 [HIGH] CWE-190 CVE-2026-77896: Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny serv Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny service over a network.

CVE-2026-69347 [HIGH] CWE-122 CVE-2026-69347: Heap-based buffer overflow in Windows Fast FAT Driver allows an unauthorized attacker to execute cod Heap-based buffer overflow in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.

CVE-2026-62702 [HIGH] CWE-476 CVE-2026-62702: Null pointer dereference in Windows Graphics Kernel allows an unauthorized attacker to deny service Null pointer dereference in Windows Graphics Kernel allows an unauthorized attacker to deny service over a network.

CVE-2026-69733 [HIGH] CWE-426 CVE-2026-69733: Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally. Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.

CVE-2026-69882 [HIGH] CWE-426 CVE-2026-69882: Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally. Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.

CVE-2026-69923 [HIGH] CWE-427 CVE-2026-69923: Uncontrolled search path element in Windows AI allows an authorized attacker to elevate privileges l Uncontrolled search path element in Windows AI allows an authorized attacker to elevate privileges locally.

CVE-2026-70133 [HIGH] CWE-770 CVE-2026-70133: Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized at Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized attacker to deny service over a network.

CVE-2026-33096 [HIGH] CWE-125 CVE-2026-33096: Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a networ Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.

CVE-2026-58610 [HIGH] CWE-122 CVE-2026-58610: 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 locally.

CVE-2026-50362 [HIGH] CWE-122 CVE-2026-50362: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker t Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.

CVE-2026-54993 [HIGH] CWE-122 CVE-2026-54993: 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 locally.

CVE-2026-69785 [HIGH] CWE-426 CVE-2026-69785: Untrusted search path in Windows Smart Card allows an authorized attacker to elevate privileges loca Untrusted search path in Windows Smart Card allows an authorized attacker to elevate privileges locally.

CVE-2026-50462 [HIGH] CWE-73 CVE-2026-50462: External control of file name or path in Windows Ancillary Function Driver for WinSock allows an aut External control of file name or path in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-70184 [HIGH] CWE-41 CVE-2026-70184: Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to el Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.

CVE-2026-68887 [HIGH] CWE-125 CVE-2026-68887: Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to deny Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to deny service over a network.

CVE-2026-69329 [HIGH] CWE-125 CVE-2026-69329: Out-of-bounds read in BranchCache allows an unauthorized attacker to deny service over a network. Out-of-bounds read in BranchCache allows an unauthorized attacker to deny service over a network.

CVE-2026-54113 [HIGH] CWE-770 CVE-2026-54113: Allocation of resources without limits or throttling in Windows Kernel allows an unauthorized attack Allocation of resources without limits or throttling in Windows Kernel allows an unauthorized attacker to deny service over a network.

CVE-2026-59132 [HIGH] CWE-476 CVE-2026-59132: Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a ne Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.