CVE-2026-105007
High CVSS 8.8Published 2026-10-13 ยท last changed 2026-10-13
The fix
Microsoft fixes this in updatesKB5126868, KB5126651, KB5126657, KB5126653, KB5127648, KB5127646, KB5126835, KB5126836, KB5126655, KB5126646. The fixed build differs per Windows version, so the row that matters is the one matching the machine you are looking at.
| Windows version | Fixed in build | Update | Released |
|---|---|---|---|
| Windows 10 Version 1607 for 32-bit Systems | 10.0.14393.9612 | KB5126868 | 2026-10-13 |
| Windows 10 Version 1607 for x64-based Systems | 10.0.14393.9612 | KB5126868 | 2026-10-13 |
| Windows 10 Version 1809 for 32-bit Systems | 10.0.17763.9376 | KB5126651 | 2026-10-13 |
| Windows 10 Version 1809 for x64-based Systems | 10.0.17763.9376 | KB5126651 | 2026-10-13 |
| Windows 10 Version 21H2 for 32-bit Systems | 10.0.19044.7807 | KB5126657 | 2026-10-13 |
| Windows 10 Version 21H2 for ARM64-based Systems | 10.0.19044.7807 | KB5126657 | 2026-10-13 |
| Windows 10 Version 21H2 for x64-based Systems | 10.0.19044.7807 | KB5126657 | 2026-10-13 |
| Windows 10 Version 22H2 for 32-bit Systems | 10.0.19044.7807 | KB5126657 | 2026-10-13 |
| Windows 10 Version 22H2 for ARM64-based Systems | 10.0.19044.7807 | KB5126657 | 2026-10-13 |
| Windows 10 Version 22H2 for x64-based Systems | 10.0.19044.7807 | KB5126657 | 2026-10-13 |
| Windows 11 Version 23H2 for ARM64-based Systems | 10.0.22631.7652 | KB5126653 | 2026-10-13 |
| Windows 11 Version 23H2 for x64-based Systems | 10.0.22631.7652 | KB5126653 | 2026-10-13 |
| Windows 11 Version 24H2 for ARM64-based Systems | 10.0.26100.9711 | KB5127648 | 2026-10-13 |
| Windows 11 Version 24H2 for x64-based Systems | 10.0.26100.9711 | KB5127648 | 2026-10-13 |
| Windows 11 Version 25H2 for ARM64-based Systems | 10.0.26200.9711 | KB5127648 | 2026-10-13 |
| Windows 11 Version 25H2 for x64-based Systems | 10.0.26200.9711 | KB5127648 | 2026-10-13 |
| Windows 11 Version 26H1 for ARM64-based Systems | 10.0.28000.3231 | KB5127646 | 2026-10-13 |
| Windows 11 version 26H1 for x64-based Systems | 10.0.28000.3231 | KB5127646 | 2026-10-13 |
| Windows 11 Version 26H2 for ARM64-based Systems | 10.0.26300.9711 | KB5127648 | 2026-10-13 |
| Windows 11 Version 26H2 for x64-based Systems | 10.0.26300.9711 | KB5127648 | 2026-10-13 |
| Windows Server 2012 | 6.2.9200.26434 | KB5126835 | 2026-10-13 |
| Windows Server 2012 R2 | 6.3.9600.23470 | KB5126836 | 2026-10-13 |
| Windows Server 2012 R2 (Server Core installation) | 6.3.9600.23470 | KB5126836 | 2026-10-13 |
| Windows Server 2012 (Server Core installation) | 6.2.9200.26434 | KB5126835 | 2026-10-13 |
| Windows Server 2016 | 10.0.14393.9612 | KB5126868 | 2026-10-13 |
| Windows Server 2016 (Server Core installation) | 10.0.14393.9612 | KB5126868 | 2026-10-13 |
| Windows Server 2019 | 10.0.17763.9376 | KB5126651 | 2026-10-13 |
| Windows Server 2019 (Server Core installation) | 10.0.17763.9376 | KB5126651 | 2026-10-13 |
| Windows Server 2022 | 10.0.20348.5761 | KB5126655 | 2026-10-13 |
| Windows Server 2022 (Server Core installation) | 10.0.20348.5761 | KB5126655 | 2026-10-13 |
| Windows Server 2025 | 10.0.26100.33650 | KB5126646 | 2026-10-13 |
| Windows Server 2025 (Server Core installation) | 10.0.26100.33650 | KB5126646 | 2026-10-13 |
Having the KB is not the same as knowing whether a machine has it. Windows updates supersede each other, so the update you installed often covers a fix that shipped in an earlier one. Paste your build into the patch checker and it walks that chain for you.
What it is
An elevation of privilege vulnerability exists in the Network Driver Interface Specification (NDIS) when ndis.sys fails to check the length of a buffer prior to copying memory to it. To exploit the vulnerability, in a local attack scenario, an attacker could run a specially crafted application to elevate the attacker's privilege level. An attacker who successfully exploited this vulnerability could run processes in an elevated context. However, an attacker must first gain access to the local system with the ability to execute a malicious application in order to exploit this vulnerability. The security update addresses the vulnerability by changing how ndis.sys validates buffer length.
Sources
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H