Known vulnerabilities in Microsoft Windows 10 Version 21H2
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-83755 | Use of uninitialized resource in Windows Win32K allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83718 | Use after free in Windows Installer allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83728 | Improper validation of syntactic correctness of input in Windows Hyper-V allows an authorized attacker to perform… | 8.8 High | Oct 13, 2026 |
| CVE-2026-83732 | Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83724 | Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges… | 7.0 High | Oct 13, 2026 |
| CVE-2026-83736 | Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83725 | Heap-based buffer overflow in Microsoft Windows Search Component allows an unauthorized attacker to execute code over… | 8.8 High | Oct 13, 2026 |
| CVE-2026-83716 | Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally | 8.8 High | Oct 13, 2026 |
| CVE-2026-83717 | Use after free in Windows Installer allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83739 | Use after free in Windows Bluetooth Service allows an unauthorized attacker to execute code over an adjacent network | 7.5 High | Oct 13, 2026 |
| CVE-2026-83689 | Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83697 | Time-of-check time-of-use (toctou) race condition in Windows Modern Device Management (MDM) allows an authorized… | 4.7 Medium | Oct 13, 2026 |
| CVE-2026-83698 | Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate… | 7.8 High | Oct 13, 2026 |
| CVE-2026-83709 | Heap-based buffer overflow in Windows NTLM allows an authorized attacker to elevate privileges locally | 7.8 High | Oct 13, 2026 |
| CVE-2026-83701 | Use after free in Windows Now Playing Session Manager allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83702 | Use after free in Windows Installer allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83685 | Buffer over-read in Windows IKE Extension allows an authorized attacker to deny service over a network | 6.5 Medium | Oct 13, 2026 |
| CVE-2026-83703 | Out-of-bounds read in Windows Wi-Fi Driver allows an unauthorized attacker to deny service over an adjacent network | 6.5 Medium | Oct 13, 2026 |
| CVE-2026-83686 | Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83695 | Use of uninitialized resource in Windows Event Logging Service allows an authorized attacker to disclose information… | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83696 | Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83714 | Use of uninitialized resource in Windows HTTP.sys allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83676 | Integer underflow (wrap or wraparound) in Windows Installer allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 13, 2026 |
| CVE-2026-83668 | Out-of-bounds read in Windows WLAN Service allows an authorized attacker to disclose information locally | 5.5 Medium | Oct 13, 2026 |
| CVE-2026-83680 | Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally | 7.0 High | Oct 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 1607 4535
Windows Server 2012 R2 4103
Windows 10 Version 22H2 4041
Windows Server 2012 R2 (Server Core installation) 3958
Windows Server 2012 3865
Windows Server 2012 (Server Core installation) 3732