Microsoft Windows 11 Version 26H1 vulnerabilities

CVE-2026-54125 [HIGH] CWE-362 CVE-2026-54125: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

CVE-2026-50458 [HIGH] CWE-362 CVE-2026-50458: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privilege Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

CVE-2026-96317 [HIGH] CWE-416 CVE-2026-96317: Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally. Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-88080 [HIGH] CWE-416 CVE-2026-88080: Use after free in Windows Installer allows an authorized attacker to elevate privileges locally. Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.

CVE-2026-85334 [HIGH] CWE-125 CVE-2026-85334: Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to discl Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to disclose information over a network.

CVE-2026-26181 [HIGH] CWE-362 CVE-2026-26181: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privilege Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

CVE-2026-103558 [HIGH] CWE-833 CVE-2026-103558: Deadlock in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny Deadlock in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.

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-2026-108131 [HIGH] CWE-295 CVE-2026-108131: No cwe for this issue in Active Directory Federation Services (AD FS) allows an unauthorized attacke No cwe for this issue in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

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-2026-83739 [HIGH] CWE-416 CVE-2026-83739: Use after free in Windows Bluetooth Service allows an unauthorized attacker to execute code over an Use after free in Windows Bluetooth Service allows an unauthorized attacker to execute code over an adjacent 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-2026-20846 [HIGH] CWE-126 CVE-2026-20846: Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network. Buffer over-read in Windows GDI+ 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-2026-83647 [HIGH] CWE-125 CVE-2026-83647: Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny servi Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.