Microsoft Windows 11 25H2 vulnerabilities

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-2025-55334 [MEDIUM] CWE-312 CVE-2025-55334: Cleartext storage of sensitive information in Windows Kernel allows an unauthorized attacker to bypa Cleartext storage of sensitive information in Windows Kernel allows an unauthorized attacker to bypass a security feature 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.

CVE-2026-50381 [MEDIUM] CWE-843 CVE-2026-50381: Access of resource using incompatible type ('type confusion') in Composite Image File System Driver Access of resource using incompatible type ('type confusion') in Composite Image File System Driver allows an authorized attacker to disclose information locally.

CVE-2026-50495 [MEDIUM] CWE-284 CVE-2026-50495: Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.

CVE-2026-58614 [MEDIUM] CWE-125 CVE-2026-58614: Out-of-bounds read in Windows Kernel allows an authorized attacker to bypass a security feature loca Out-of-bounds read in Windows Kernel allows an authorized attacker to bypass a security feature locally.

CVE-2026-58545 [MEDIUM] CWE-284 CVE-2026-58545: Improper access control in Windows Kernel allows an authorized attacker to bypass a security feature Improper access control in Windows Kernel allows an authorized attacker to bypass a security feature locally.

CVE-2026-58638 [MEDIUM] CWE-325 CVE-2026-58638: Missing cryptographic step in Windows Boot Loader allows an authorized attacker to bypass a security Missing cryptographic step in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.

CVE-2026-50303 [MEDIUM] CWE-1240 CVE-2026-50303: Use of a cryptographic primitive with a risky implementation in Windows Key Guard allows an authoriz Use of a cryptographic primitive with a risky implementation in Windows Key Guard allows an authorized attacker to bypass a security feature locally.

CVE-2025-60708 [MEDIUM] CWE-822 CVE-2025-60708: Untrusted pointer dereference in Storvsp.sys Driver allows an authorized attacker to deny service lo Untrusted pointer dereference in Storvsp.sys Driver allows an authorized attacker to deny service locally.

CVE-2025-59284 [MEDIUM] CWE-200 CVE-2025-59284: Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized at Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing locally.

CVE-2026-50485 [MEDIUM] CWE-126 CVE-2026-50485: Buffer over-read in Windows Hyper-V allows an authorized attacker to deny service over an adjacent n Buffer over-read in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.

CVE-2026-20932 [MEDIUM] CWE-200 CVE-2026-20932: Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an author Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.