Microsoft Windows 11 Version 26H1 vulnerabilities

CVE-2026-32088 [MEDIUM] CWE-362 CVE-2026-32088: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Biometric Service allows an unauthorized attacker to bypass a security feature with a physical attack.

CVE-2026-50475 [MEDIUM] CWE-126 CVE-2026-50475: Buffer over-read in Windows Kernel allows an authorized attacker to disclose information locally. Buffer over-read in Windows Kernel allows an authorized attacker to disclose information locally.

CVE-2026-50341 [MEDIUM] CWE-126 CVE-2026-50341: Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally. Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally.

CVE-2026-42914 [MEDIUM] CWE-125 CVE-2026-42914: Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network. Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network.

CVE-2026-40401 [HIGH] CWE-476 CVE-2026-40401: Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service locally. Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service locally.

CVE-2026-25180 [MEDIUM] CWE-125 CVE-2026-25180: Out-of-bounds read in Microsoft Graphics Component allows an unauthorized attacker to disclose infor Out-of-bounds read in Microsoft Graphics Component allows an unauthorized attacker to disclose information locally.

CVE-2026-25186 [MEDIUM] CWE-200 CVE-2026-25186: Exposure of sensitive information to an unauthorized actor in Windows Accessibility Infrastructure ( Exposure of sensitive information to an unauthorized actor in Windows Accessibility Infrastructure (ATBroker.exe) allows an authorized attacker to disclose information locally.

CVE-2026-50681 [MEDIUM] CWE-200 CVE-2026-50681: Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows an authorized attacker to disclose information locally.

CVE-2026-50352 [MEDIUM] CWE-200 CVE-2026-50352: Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows an authorized attacker to disclose information locally.

CVE-2026-42969 [MEDIUM] CWE-908 CVE-2026-42969: Use of uninitialized resource in Windows Push Notifications allows an authorized attacker to disclos Use of uninitialized resource in Windows Push Notifications allows an authorized attacker to disclose information locally.

CVE-2026-50690 [MEDIUM] CWE-908 CVE-2026-50690: Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information l Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.

CVE-2026-20806 [MEDIUM] CWE-843 CVE-2026-20806: Access of resource using incompatible type ('type confusion') in Windows COM allows an authorized at Access of resource using incompatible type ('type confusion') in Windows COM allows an authorized attacker to disclose information locally.

CVE-2026-50483 [MEDIUM] CWE-200 CVE-2026-50483: Exposure of sensitive information to an unauthorized actor in Microsoft Graphics Component allows an Exposure of sensitive information to an unauthorized actor in Microsoft Graphics Component allows an authorized attacker to disclose information locally.

CVE-2026-49180 [MEDIUM] CWE-59 CVE-2026-49180: Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.

CVE-2026-50383 [MEDIUM] CWE-126 CVE-2026-50383: Buffer over-read in Windows Print Spooler Components allows an authorized attacker to disclose infor Buffer over-read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.

CVE-2026-49801 [MEDIUM] CWE-908 CVE-2026-49801: Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information l Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.

CVE-2026-40422 [MEDIUM] CWE-908 CVE-2026-40422: Use of uninitialized resource in Windows File Explorer allows an authorized attacker to disclose inf Use of uninitialized resource in Windows File Explorer allows an authorized attacker to disclose information locally.

CVE-2026-49177 [MEDIUM] CWE-125 CVE-2026-49177: Out-of-bounds read in Windows TCP/IP allows an authorized attacker to disclose information locally. Out-of-bounds read in Windows TCP/IP allows an authorized attacker to disclose information locally.

CVE-2026-54997 [MEDIUM] CWE-908 CVE-2026-54997: Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information l Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.

CVE-2026-50300 [MEDIUM] CWE-125 CVE-2026-50300: Integer underflow (wrap or wraparound) in Windows Kernel allows an authorized attacker to disclose i Integer underflow (wrap or wraparound) in Windows Kernel allows an authorized attacker to disclose information locally.