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Known vulnerabilities in Microsoft Windows 11 Version 25H2

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CVE Summary Score Published
CVE-2026-20836 Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an… 7.0 High Jan 13, 2026
CVE-2026-20835 Out-of-bounds read in Capability Access Management Service (camsvc) allows an authorized attacker to disclose… 5.5 Medium Jan 13, 2026
CVE-2026-20834 Absolute path traversal in Windows Shell allows an unauthorized attacker to perform spoofing with a physical attack 4.6 Medium Jan 13, 2026
CVE-2026-20832 Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability 7.8 High Jan 13, 2026
CVE-2026-20829 Out-of-bounds read in Windows TPM allows an authorized attacker to disclose information locally 5.5 Medium Jan 13, 2026
CVE-2026-20831 Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock allows an… 7.8 High Jan 13, 2026
CVE-2026-20827 Exposure of sensitive information to an unauthorized actor in Tablet Windows User Interface (TWINUI) Subsystem allows an… 5.5 Medium Jan 13, 2026
CVE-2026-20828 Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose… 4.6 Medium Jan 13, 2026
CVE-2026-20826 Concurrent execution using shared resource with improper synchronization ('race condition') in Tablet Windows User… 7.8 High Jan 13, 2026
CVE-2026-20824 Protection mechanism failure in Windows Remote Assistance allows an unauthorized attacker to bypass a security feature… 5.5 Medium Jan 13, 2026
CVE-2026-20825 Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally 4.4 Medium Jan 13, 2026
CVE-2026-20822 Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally 7.8 High Jan 13, 2026
CVE-2026-20823 Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to… 5.5 Medium Jan 13, 2026
CVE-2026-20821 Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an unauthorized… 6.2 Medium Jan 13, 2026
CVE-2026-20819 Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to… 5.5 Medium Jan 13, 2026
CVE-2026-20820 Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate… 7.8 High Jan 13, 2026
CVE-2026-20817 Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker… 7.8 High Jan 13, 2026
CVE-2026-20816 Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate… 7.8 High Jan 13, 2026
CVE-2026-20814 Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an… 7.0 High Jan 13, 2026
CVE-2026-20815 Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access… 7.0 High Jan 13, 2026
CVE-2026-20811 Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to… 7.8 High Jan 13, 2026
CVE-2026-20812 Improper input validation in Windows LDAP - Lightweight Directory Access Protocol allows an authorized attacker to… 6.5 Medium Jan 13, 2026
CVE-2026-20808 Concurrent execution using shared resource with improper synchronization ('race condition') in Printer Association… 7.0 High Jan 13, 2026
CVE-2026-20809 Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized attacker to elevate… 7.8 High Jan 13, 2026
CVE-2026-20805 Exploited Microsoft Windows Information Disclosure Vulnerability 5.5 Medium Jan 13, 2026

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