Microsoft Windows 11 26H1 vulnerabilities

CVE-2026-69592 [HIGH] CWE-122 CVE-2026-69592: 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-2026-69436 [HIGH] CWE-122 CVE-2026-69436: Heap-based buffer overflow in Windows State Repository Service allows an authorized attacker to elev Heap-based buffer overflow in Windows State Repository Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83990 [HIGH] CWE-121 CVE-2026-83990: Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

CVE-2026-84000 [HIGH] CWE-122 CVE-2026-84000: Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to execute Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to execute code locally.

CVE-2026-62894 [HIGH] CWE-122 CVE-2026-62894: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate priv Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-62713 [HIGH] CWE-122 CVE-2026-62713: Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker t Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-62771 [HIGH] CWE-122 CVE-2026-62771: Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker t Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-62772 [HIGH] CWE-122 CVE-2026-62772: Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an a Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

CVE-2026-49793 [HIGH] CWE-122 CVE-2026-49793: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.

CVE-2026-58534 [HIGH] CWE-122 CVE-2026-58534: Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to e Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.

CVE-2026-69534 [HIGH] CWE-77 CVE-2026-69534: Improper neutralization of special elements used in a command ('command injection') in Windows Progr Improper neutralization of special elements used in a command ('command injection') in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

CVE-2026-97794 [HIGH] CWE-122 CVE-2026-97794: Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an a Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

CVE-2026-50451 [HIGH] CWE-306 CVE-2026-50451: Missing authentication for critical function in Windows Routing and Remote Access Service (RRAS) all Missing authentication for critical function in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

CVE-2026-40407 [HIGH] CWE-122 CVE-2026-40407: Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-50459 [HIGH] CWE-416 CVE-2026-50459: 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.

CVE-2026-50333 [HIGH] CWE-306 CVE-2026-50333: Missing authentication for critical function in Windows Spaceport.sys allows an authorized attacker Missing authentication for critical function in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

CVE-2026-72932 [HIGH] CWE-126 CVE-2026-72932: Buffer over-read in Windows Message Queuing Queue Manager allows an unauthorized attacker to disclos Buffer over-read in Windows Message Queuing Queue Manager allows an unauthorized attacker to disclose information over a network.

CVE-2026-40397 [HIGH] CWE-191 CVE-2026-40397: Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-44808 [HIGH] CWE-122 CVE-2026-44808: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate priv Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-44811 [HIGH] CWE-20 CVE-2026-44811: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate priv Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.