---
id: CVE-2026-105009
title: >-
  Incorrect default permissions in Windows Server Update Service allows an
  authorized attacker to elevate privileges locally.
summary: >-
  Incorrect default permissions in Windows Server Update Service allows an
  authorized attacker to elevate privileges locally.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-276
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T22:17:27.317'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105009'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105009'
    label: secure@microsoft.com
tags:
  - nvd
ingestedAt: '2026-10-13T19:43:28.912Z'
---

## Overview

Incorrect default permissions in Windows Server Update Service allows an authorized attacker to elevate privileges locally.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.