Microsoft Windows 11 Version 26H1 vulnerabilities

CVE-2026-69819 [CRITICAL] CWE-787 CVE-2026-69819: Out-of-bounds write in RPC Runtime allows an unauthorized attacker to execute code over a network. Out-of-bounds write in RPC Runtime allows an unauthorized attacker to execute code over a network.

CVE-2026-62815 [CRITICAL] CWE-416 CVE-2026-62815: Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network. Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

CVE-2026-69705 [CRITICAL] CWE-787 CVE-2026-69705: Out-of-bounds write in Windows iSCSI allows an unauthorized attacker to execute code over a network. Out-of-bounds write in Windows iSCSI allows an unauthorized attacker to execute code over a network.

CVE-2026-50439 [CRITICAL] CWE-416 CVE-2026-50439: Use after free in Microsoft Message Queuing Queue Manager allows an unauthorized attacker to execute Use after free in Microsoft Message Queuing Queue Manager allows an unauthorized attacker to execute code over a network.

CVE-2026-102217 [HIGH] CWE-41 CVE-2026-102217: Improper resolution of path equivalence in WebDAV allows an authorized attacker to elevate privilege Improper resolution of path equivalence in WebDAV allows an authorized attacker to elevate privileges over a network.

CVE-2026-73012 [HIGH] CWE-122 CVE-2026-73012: Heap-based buffer overflow in Windows Management Services allows an authorized attacker to elevate p Heap-based buffer overflow in Windows Management Services allows an authorized attacker to elevate privileges over a network.

CVE-2026-71352 [HIGH] CWE-191 CVE-2026-71352: Integer underflow (wrap or wraparound) in Windows Remote Access Connection Manager allows an authori Integer underflow (wrap or wraparound) in Windows Remote Access Connection Manager allows an authorized attacker to execute code over a network.

CVE-2026-56194 [HIGH] CWE-122 CVE-2026-56194: Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate p Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges over a network.

CVE-2026-50666 [HIGH] CWE-416 CVE-2026-50666: Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges over a network.

CVE-2026-50360 [HIGH] CWE-303 CVE-2026-50360: Incorrect implementation of authentication algorithm in Windows SMB Server allows an authorized atta Incorrect implementation of authentication algorithm in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

CVE-2026-69512 [HIGH] CWE-122 CVE-2026-69512: Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to elevate privile Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to elevate privileges over a network.

CVE-2026-69625 [HIGH] CWE-122 CVE-2026-69625: Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges over a network.

CVE-2026-100202 [CRITICAL] CWE-416 CVE-2026-100202: Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute c Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code over a network.

CVE-2026-83517 [CRITICAL] CWE-122 CVE-2026-83517: 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 over a network.

CVE-2026-96909 [CRITICAL] CWE-122 CVE-2026-96909: Heap-based buffer overflow in Windows BitLocker allows an unauthorized attacker to execute code over Heap-based buffer overflow in Windows BitLocker allows an unauthorized attacker to execute code over a network.

CVE-2026-69824 [CRITICAL] CWE-122 CVE-2026-69824: Integer underflow (wrap or wraparound) in Microsoft Standard XPS allows an unauthorized attacker to Integer underflow (wrap or wraparound) in Microsoft Standard XPS allows an unauthorized attacker to execute code over a network.

CVE-2026-69496 [CRITICAL] CWE-122 CVE-2026-69496: Heap-based buffer overflow in Windows Compressed Folder allows an unauthorized attacker to execute c Heap-based buffer overflow in Windows Compressed Folder allows an unauthorized attacker to execute code over a network.

CVE-2026-69829 [CRITICAL] CWE-122 CVE-2026-69829: Heap-based buffer overflow in Windows Shell allows an unauthorized attacker to execute code over a n Heap-based buffer overflow in Windows Shell allows an unauthorized attacker to execute code over a network.

CVE-2026-70296 [CRITICAL] CWE-787 CVE-2026-70296: Out-of-bounds write in Windows Imaging Component allows an unauthorized attacker to execute code ove Out-of-bounds write in Windows Imaging Component allows an unauthorized attacker to execute code over a network.

CVE-2026-49172 [CRITICAL] CWE-122 CVE-2026-49172: Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code ov Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a network.