Microsoft Windows 11 26H1 vulnerabilities

CVE-2026-83905 [MEDIUM] CWE-497 CVE-2026-83905: Exposure of sensitive system information to an unauthorized control sphere in Windows Shell allows a Exposure of sensitive system information to an unauthorized control sphere in Windows Shell allows an authorized attacker to disclose information locally.

CVE-2026-83897 [MEDIUM] CWE-497 CVE-2026-83897: Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel S Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.

CVE-2026-70077 [MEDIUM] CWE-416 CVE-2026-70077: Use after free in Windows Kernel allows an authorized attacker to disclose information locally. Use after free in Windows Kernel allows an authorized attacker to disclose information locally.

CVE-2026-69316 [MEDIUM] CWE-126 CVE-2026-69316: Buffer over-read in Windows Overlay Filter allows an authorized attacker to disclose information loc Buffer over-read in Windows Overlay Filter allows an authorized attacker to disclose information locally.

CVE-2026-50310 [MEDIUM] CWE-190 CVE-2026-50310: Integer overflow or wraparound in Windows Devices Human Interface allows an authorized attacker to d Integer overflow or wraparound in Windows Devices Human Interface allows an authorized attacker to disclose information locally.

CVE-2026-73019 [MEDIUM] CWE-41 CVE-2026-73019: Improper resolution of path equivalence in Windows URL Moniker allows an unauthorized attacker to by Improper resolution of path equivalence in Windows URL Moniker allows an unauthorized attacker to bypass a security feature over a network.

CVE-2026-25169 [MEDIUM] CWE-369 CVE-2026-25169: Divide by zero in Microsoft Graphics Component allows an unauthorized attacker to deny service local Divide by zero in Microsoft Graphics Component allows an unauthorized attacker to deny service locally.

CVE-2026-32181 [MEDIUM] CWE-269 CVE-2026-32181: Improper privilege management in Microsoft Windows allows an authorized attacker to deny service loc Improper privilege management in Microsoft Windows allows an authorized attacker to deny service locally.

CVE-2026-72931 [MEDIUM] CWE-772 CVE-2026-72931: Missing release of resource after effective lifetime in Windows Secure Socket Tunneling Protocol (SS Missing release of resource after effective lifetime in Windows Secure Socket Tunneling Protocol (SSTP) allows an authorized attacker to deny service locally.

CVE-2026-83582 [MEDIUM] CWE-416 CVE-2026-83582: Use after free in Windows Graphics Kernel allows an authorized attacker to disclose information loca Use after free in Windows Graphics Kernel allows an authorized attacker to disclose information locally.

CVE-2026-68849 [MEDIUM] CWE-125 CVE-2026-68849: Out-of-bounds read in Windows Bluetooth Port Driver allows an authorized attacker to disclose inform Out-of-bounds read in Windows Bluetooth Port Driver allows an authorized attacker to disclose information locally.

CVE-2026-83865 [MEDIUM] CWE-23 CVE-2026-83865: Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform t Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally.

CVE-2026-69425 [MEDIUM] CWE-59 CVE-2026-69425: Improper link resolution before file access ('link following') in Windows NTFS allows an authorized Improper link resolution before file access ('link following') in Windows NTFS allows an authorized attacker to perform tampering locally.

CVE-2026-70195 [MEDIUM] CWE-362 CVE-2026-70195: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to dis Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.

CVE-2026-69548 [MEDIUM] CWE-122 CVE-2026-69548: Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to disclose information Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.

CVE-2026-69792 [MEDIUM] CWE-362 CVE-2026-69792: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to bypass a security feature locally.

CVE-2026-70116 [MEDIUM] CWE-121 CVE-2026-70116: Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.

CVE-2026-25168 [MEDIUM] CWE-476 CVE-2026-25168: Null pointer dereference in Microsoft Graphics Component allows an unauthorized attacker to deny ser Null pointer dereference in Microsoft Graphics Component allows an unauthorized attacker to deny service locally.

CVE-2026-69978 [MEDIUM] CWE-476 CVE-2026-69978: Null pointer dereference in Windows VMSwitch allows an authorized attacker to deny service locally. Null pointer dereference in Windows VMSwitch allows an authorized attacker to deny service locally.

CVE-2026-32216 [MEDIUM] CWE-476 CVE-2026-32216: Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally.