Known vulnerabilities in Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-21243 | Null pointer dereference in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny… | 7.5 High | Feb 10, 2026 |
| CVE-2026-21244 | Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally | 7.3 High | Feb 10, 2026 |
| CVE-2026-21249 | External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally | 3.3 Low | Feb 10, 2026 |
| CVE-2026-21250 | Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally | 7.8 High | Feb 10, 2026 |
| CVE-2026-21251 | Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally | 7.8 High | Feb 10, 2026 |
| CVE-2026-21253 | Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally | 7.0 High | Feb 10, 2026 |
| CVE-2026-21255 | Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally | 8.8 High | Feb 10, 2026 |
| CVE-2026-21508 | Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally | 7.0 High | Feb 10, 2026 |
| CVE-2026-21525 | Exploited Microsoft Windows NULL Pointer Dereference Vulnerability | 6.2 Medium | Feb 10, 2026 |
| CVE-2026-21510 | Exploited Microsoft Windows Shell Protection Mechanism Failure Vulnerability | 8.8 High | Feb 10, 2026 |
| CVE-2026-21513 | Exploited Microsoft Internet Explorer Protection Mechanism Failure Vulnerability | 8.8 High | Feb 10, 2026 |
| CVE-2026-21533 | Exploited Microsoft Windows Improper Privilege Management Vulnerability | 7.8 High | Feb 10, 2026 |
| CVE-2026-21236 | Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate… | 7.8 High | Feb 10, 2026 |
| CVE-2026-21234 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices… | 7.0 High | Feb 10, 2026 |
| CVE-2026-21242 | Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally | 7.0 High | Feb 10, 2026 |
| CVE-2026-21246 | Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally | 7.8 High | Feb 10, 2026 |
| CVE-2026-21247 | Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally | 7.3 High | Feb 10, 2026 |
| CVE-2026-21248 | Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally | 7.3 High | Feb 10, 2026 |
| CVE-2026-21519 | Exploited Microsoft Windows Type Confusion Vulnerability | 7.8 High | Feb 10, 2026 |
| CVE-2026-20937 | Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to… | 5.5 Medium | Jan 13, 2026 |
| CVE-2026-20939 | Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to… | 5.5 Medium | Jan 13, 2026 |
| CVE-2026-20936 | Out-of-bounds read in Windows NDIS allows an authorized attacker to disclose information with a physical attack | 4.3 Medium | Jan 13, 2026 |
| CVE-2026-20931 | External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges… | 8.0 High | Jan 13, 2026 |
| CVE-2026-20874 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management… | 7.8 High | Jan 13, 2026 |
| CVE-2026-20929 | Improper access control in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network | 7.5 High | 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