---
id: CVE-2026-70569
title: >-
  Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to
  elevate privileges locally.
summary: >-
  Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to
  elevate privileges locally.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-125
vendor: microsoft
product: windows_11_23h2
affected:
  - windows_11_23h2 < 10.0.22631.7582
  - windows_11_24h2 < 10.0.26100.9445
  - windows_11_25h2 < 10.0.26200.9445
  - windows_11_26h1 < 10.0.28000.2954
  - windows_server_2022 < 10.0.20348.5622
  - windows_server_2025 < 10.0.26100.33438
patched:
  - windows_11_23h2 10.0.22631.7582
  - windows_11_24h2 10.0.26100.9445
  - windows_11_25h2 10.0.26200.9445
  - windows_11_26h1 10.0.28000.2954
  - windows_server_2022 10.0.20348.5622
  - windows_server_2025 10.0.26100.33438
published: '2026-09-08'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T20:56:59.073'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70569'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70569'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00311
epssPercentile: 0.24139
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T04:25:08.558644Z'
ingestedAt: '2026-09-08T19:08:49.622Z'
---

## Overview

Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

## Affected

- `windows_11_23h2 < 10.0.22631.7582`
- `windows_11_24h2 < 10.0.26100.9445`
- `windows_11_25h2 < 10.0.26200.9445`
- `windows_11_26h1 < 10.0.28000.2954`
- `windows_server_2022 < 10.0.20348.5622`
- `windows_server_2025 < 10.0.26100.33438`

## Remediation

Upgrade past the affected range:

- `windows_11_23h2 10.0.22631.7582`
- `windows_11_24h2 10.0.26100.9445`
- `windows_11_25h2 10.0.26200.9445`
- `windows_11_26h1 10.0.28000.2954`
- `windows_server_2022 10.0.20348.5622`
- `windows_server_2025 10.0.26100.33438`