Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-69403 [MEDIUM] CWE-862 CVE-2026-69403: Missing authorization in Windows SMB Server allows an authorized attacker to disclose information lo Missing authorization in Windows SMB Server allows an authorized attacker to disclose information locally.

CVE-2026-59135 [MEDIUM] CWE-1390 CVE-2026-59135: Weak authentication in Microsoft Windows Search Component allows an authorized attacker to disclose Weak authentication in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.

CVE-2026-69905 [MEDIUM] CWE-862 CVE-2026-69905: Missing authorization in Windows AppX Deployment Service allows an authorized attacker to perform ta Missing authorization in Windows AppX Deployment Service allows an authorized attacker to perform tampering 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-2026-69453 [MEDIUM] CWE-862 CVE-2026-69453: Missing authorization in Microsoft Windows Search Component allows an authorized attacker to perform Missing authorization in Microsoft Windows Search Component allows an authorized attacker to perform tampering locally.

CVE-2026-61936 [MEDIUM] CWE-862 CVE-2026-61936: Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature 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-2026-95904 [MEDIUM] CWE-126 CVE-2026-95904: Buffer over-read in Windows Event Logging Service allows an authorized attacker to disclose informat Buffer over-read in Windows Event Logging Service allows an authorized attacker to disclose information locally.

CVE-2026-88158 [MEDIUM] CWE-125 CVE-2026-88158: Out-of-bounds read in Microsoft Digest Authentication allows an authorized attacker to disclose info Out-of-bounds read in Microsoft Digest Authentication allows an authorized attacker to disclose information locally.

CVE-2026-96315 [MEDIUM] CWE-862 CVE-2026-96315: Missing authorization in Windows Overlay Filter allows an authorized attacker to perform tampering l Missing authorization in Windows Overlay Filter allows an authorized attacker to perform tampering 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-2026-108466 [MEDIUM] CWE-125 CVE-2026-108466: Out-of-bounds read in Windows Kernel allows an unauthorized attacker to deny service over a network. Out-of-bounds read in Windows Kernel allows an unauthorized attacker to deny service over a network.

CVE-2025-55229 [MEDIUM] CWE-347 CVE-2025-55229: Improper verification of cryptographic signature in Windows Certificates allows an unauthorized atta Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network.

CVE-2023-20569 [MEDIUM] CWE-203 CVE-2023-20569: A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the retur A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.

CVE-2023-28235 [MEDIUM] CVE-2023-28235: Windows Lock Screen Security Feature Bypass Vulnerability Windows Lock Screen Security Feature Bypass Vulnerability

CVE-2023-28270 [MEDIUM] CWE-863 CVE-2023-28270: Windows Lock Screen Security Feature Bypass Vulnerability Windows Lock Screen Security Feature Bypass Vulnerability

CVE-2025-21202 [MEDIUM] CWE-284 CVE-2025-21202: Windows Recovery Environment Agent Elevation of Privilege Vulnerability Windows Recovery Environment Agent Elevation of Privilege Vulnerability

CVE-2025-29974 [MEDIUM] CWE-125 CVE-2025-29974: Integer underflow (wrap or wraparound) in Windows Kernel allows an unauthorized attacker to disclose Integer underflow (wrap or wraparound) in Windows Kernel allows an unauthorized attacker to disclose information over an adjacent network.

CVE-2025-32722 [MEDIUM] CWE-284 CVE-2025-32722: Improper access control in Windows Storage Port Driver allows an authorized attacker to disclose inf Improper access control in Windows Storage Port Driver allows an authorized attacker to disclose information locally.

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.