---
id: "CVE-2026-105546"
page: "https://infrastack.ai/live/CVE-2026-105546"
kind: "vulnerability"
aliases: ["CVE-2026-105546"]
title: "Windows Management Instrumentation: race condition lets a local user gain elevated privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10 1607 / Server 2016", "fixed": ["10.0.14393.9688"], "affected": "< 10.0.14393.9688", "ecosystem": "microsoft"}, {"name": "Windows 10 1809 / Server 2019", "fixed": ["10.0.17763.9487"], "affected": "< 10.0.17763.9487", "ecosystem": "microsoft"}, {"name": "Windows 10 21H2", "fixed": ["10.0.19044.7846"], "affected": "< 10.0.19044.7846", "ecosystem": "microsoft"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": "< 10.0.19045.7846", "ecosystem": "microsoft"}, {"name": "Windows Server 2022", "fixed": ["10.0.20348.5870"], "affected": "< 10.0.20348.5870", "ecosystem": "microsoft"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": "< 10.0.22631.7711", "ecosystem": "microsoft"}, {"name": "Windows 11 24H2", "fixed": ["10.0.26100.9974"], "affected": "< 10.0.26100.9974", "ecosystem": "microsoft"}, {"name": "Windows 11 25H2", "fixed": ["10.0.26200.9974"], "affected": "< 10.0.26200.9974", "ecosystem": "microsoft"}, {"name": "Windows 11 26H1", "fixed": ["10.0.28000.3501"], "affected": "< 10.0.28000.3501", "ecosystem": "microsoft"}, {"name": "Windows 11 26H2", "fixed": ["10.0.26300.9974"], "affected": "< 10.0.26300.9974", "ecosystem": "microsoft"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": "< 10.0.26100.33822", "ecosystem": "microsoft"}]
ecosystems: []
tags: ["infrastructure", "local", "privilege-escalation", "windows", "wmi"]
not_affected_if: ["no-local-untrusted-users", "patched"]
published_at: "2026-11-10T19:17:56+00:00"
first_seen_at: "2026-11-10T19:24:19+00:00"
updated_at: "2026-11-11T00:58:23+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-105546", "first_seen_at": "2026-11-10T19:24:19+00:00"}, {"source": "analyst", "url": "https://cveawg.mitre.org/api/cve/CVE-2026-105546", "first_seen_at": "2026-11-11T00:58:23+00:00", "cites": ["https://cveawg.mitre.org/api/cve/CVE-2026-105546"]}]
exploit_sources: []
---

# Windows Management Instrumentation: race condition lets a local user gain elevated privileges

Link for people: https://infrastack.ai/live/CVE-2026-105546 (this .md is for agents)

A race condition in Windows Management Instrumentation (WMI) lets an attacker who already has a local account raise their privileges. The sources do not describe a remote path.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- microsoft:Windows 10 1607 / Server 2016 affected < 10.0.14393.9688 fixed 10.0.14393.9688
- microsoft:Windows 10 1809 / Server 2019 affected < 10.0.17763.9487 fixed 10.0.17763.9487
- microsoft:Windows 10 21H2 affected < 10.0.19044.7846 fixed 10.0.19044.7846
- microsoft:Windows 10 22H2 affected < 10.0.19045.7846 fixed 10.0.19045.7846
- microsoft:Windows Server 2022 affected < 10.0.20348.5870 fixed 10.0.20348.5870
- microsoft:Windows 11 23H2 affected < 10.0.22631.7711 fixed 10.0.22631.7711
- microsoft:Windows 11 24H2 affected < 10.0.26100.9974 fixed 10.0.26100.9974
- microsoft:Windows 11 25H2 affected < 10.0.26200.9974 fixed 10.0.26200.9974
- microsoft:Windows 11 26H1 affected < 10.0.28000.3501 fixed 10.0.28000.3501
- microsoft:Windows 11 26H2 affected < 10.0.26300.9974 fixed 10.0.26300.9974
- microsoft:Windows Server 2025 affected < 10.0.26100.33822 fixed 10.0.26100.33822

## How to check

Run winver or [System.Environment]::OSVersion.Version / (Get-ComputerInfo).OsBuildRevision and compare the full build number (e.g. 10.0.26100.xxxx) to the fixed build for your Windows version. Lower means exposed.

## Fix

Install the November 2026 cumulative update for your Windows version so the build is at or above: Win10 1607/Server 2016 10.0.14393.9688; 1809/Server 2019 10.0.17763.9487; Win10 21H2 10.0.19044.7846; 22H2 10.0.19045.7846; Server 2022 10.0.20348.5870; Win11 23H2 10.0.22631.7711; 24H2 10.0.26100.9974; 25H2 10.0.26200.9974; 26H1 10.0.28000.3501; 26H2 10.0.26300.9974; Server 2025 10.0.26100.33822.

## Timeline

- 2026-11-10T19:24:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-105546
- 2026-11-11T00:58:23+00:00 analyst https://cveawg.mitre.org/api/cve/CVE-2026-105546 — Microsoft CNA CVE record read (MSRC page is JS-only, not read directly). Fixed builds per version listed; no exploitation reported (CISA SSVC: none), no PoC found. How-to-check not verified.

## Documents

- [advisory] CVE-2026-105546 CVE record (Microsoft CNA) https://cveawg.mitre.org/api/cve/CVE-2026-105546

## From the sources

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_