Microsoft Windows 11 Version 26h1
741 CVEs affecting Microsoft Windows 11 Version 26h1. Latest disclosed: 2026-07-16. Critical: 16, High: 561.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2026-57092 | Critical | 9.9 | 2026-07-14 | Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network. |
CVE-2026-56190 | Critical | 9.8 | 2026-07-14 | Use of uninitialized resource in Windows RDP allows an unauthorized attacker to execute code over a network. |
CVE-2026-56188 | Critical | 9.8 | 2026-07-14 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Server Network driver allows an unauthorized attacker to… |
CVE-2026-50447 | Critical | 9.8 | 2026-07-14 | Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over a network. |
CVE-2026-54990 | Critical | 9.8 | 2026-07-14 | Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network. |
CVE-2026-49172 | Critical | 9.8 | 2026-07-14 | Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a network. |
CVE-2026-42990 | Critical | 9.8 | 2026-07-14 | Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network. |
CVE-2026-47291 | Critical | 9.8 | 2026-06-09 | Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network. |
CVE-2026-45657 | Critical | 9.8 | 2026-06-09 | Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network. |
CVE-2026-44815 | Critical | 9.8 | 2026-06-09 | Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network. |
CVE-2026-41096 | Critical | 9.8 | 2026-05-12 | Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a network. |
CVE-2026-33824 | Critical | 9.8 | 2026-04-14 | Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network. |
CVE-2026-50380 | Critical | 9.6 | 2026-07-14 | Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network. |
CVE-2026-42904 | Critical | 9.6 | 2026-06-09 | Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network. |
CVE-2026-49798 | Critical | 9.3 | 2026-07-14 | Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally. |
CVE-2026-45602 | Critical | 9.1 | 2026-06-09 | No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network. |
CVE-2026-58626 | High | 8.8 | 2026-07-14 | Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network. |
CVE-2026-58594 | High | 8.8 | 2026-07-14 | Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a network. |
CVE-2026-58534 | High | 8.8 | 2026-07-14 | Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally. |
CVE-2026-57094 | High | 8.8 | 2026-07-14 | Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network. |