Known vulnerabilities in Microsoft Windows 11 Version 25H2
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-20922 | Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20923 | Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20921 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows… | 7.5 High | Jan 13, 2026 |
| CVE-2026-20919 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows… | 7.5 High | Jan 13, 2026 |
| CVE-2026-20918 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management… | 7.8 High | Jan 13, 2026 |
| CVE-2026-20876 | Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to… | 6.7 Medium | Jan 13, 2026 |
| CVE-2026-20877 | Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20869 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Local Session… | 7.0 High | Jan 13, 2026 |
| CVE-2026-20875 | Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker… | 7.5 High | Jan 13, 2026 |
| CVE-2026-20865 | Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20864 | Heap-based buffer overflow in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate… | 7.8 High | Jan 13, 2026 |
| CVE-2026-20860 | Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an… | 7.8 High | Jan 13, 2026 |
| CVE-2026-20859 | Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20857 | Untrusted pointer dereference in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate… | 7.8 High | Jan 13, 2026 |
| CVE-2026-20858 | Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20856 | Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a… | 8.1 High | Jan 13, 2026 |
| CVE-2026-20851 | Out-of-bounds read in Capability Access Management Service (camsvc) allows an unauthorized attacker to disclose… | 6.2 Medium | Jan 13, 2026 |
| CVE-2026-20852 | Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally | 7.7 High | Jan 13, 2026 |
| CVE-2026-20844 | Use after free in Windows Clipboard Server allows an unauthorized attacker to elevate privileges locally | 7.4 High | Jan 13, 2026 |
| CVE-2026-20847 | Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform… | 6.5 Medium | Jan 13, 2026 |
| CVE-2026-20840 | Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20842 | Use after free in Windows DWM allows an authorized attacker to elevate privileges locally | 7.0 High | Jan 13, 2026 |
| CVE-2026-20839 | Improper access control in Windows Client-Side Caching (CSC) Service allows an authorized attacker to disclose… | 5.5 Medium | Jan 13, 2026 |
| CVE-2026-20837 | Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally | 7.8 High | Jan 13, 2026 |
| CVE-2026-20838 | Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose… | 5.5 Medium | Jan 13, 2026 |
Other Microsoft products
Windows Server 2019 5745
Windows Server 2019 (Server Core installation) 5648
Windows 10 Version 1809 5349
Windows Server 2022 5112
Windows Server 2016 5051
Windows Server 2016 (Server Core installation) 4847
Windows 10 Version 21H2 4539
Windows 10 Version 1607 4535
Windows Server 2012 R2 4103
Windows 10 Version 22H2 4041
Windows Server 2012 R2 (Server Core installation) 3958
Windows Server 2012 3865