---
id: CVE-2026-69443
title: >-
  Out-of-bounds read in Microsoft Azure Attestation service and Device Health
  Attestation Service allows an unauthorized attacker to disclose information
  over a network.
summary: >-
  Out-of-bounds read in Microsoft Azure Attestation service and Device Health
  Attestation Service allows an unauthorized attacker to disclose information
  over a network.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-125
vendor: microsoft
product: windows_10_1809
affected:
  - windows_10_1809 < 10.0.17763.9245
  - windows_server_2019 < 10.0.17763.9245
  - windows_server_2022 < 10.0.20348.5622
  - windows_server_2025 < 10.0.26100.33438
patched:
  - windows_10_1809 10.0.17763.9245
  - windows_server_2019 10.0.17763.9245
  - windows_server_2022 10.0.20348.5622
  - windows_server_2025 10.0.26100.33438
published: '2026-09-08'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T19:18:20.410'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69443'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69443'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-08T19:51:20.654438Z'
epss: 0.01027
epssPercentile: 0.62156
ingestedAt: '2026-09-08T19:08:49.612Z'
---

## Overview

Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to disclose information over a network.

## Affected

- `windows_10_1809 < 10.0.17763.9245`
- `windows_server_2019 < 10.0.17763.9245`
- `windows_server_2022 < 10.0.20348.5622`
- `windows_server_2025 < 10.0.26100.33438`

## Remediation

Upgrade past the affected range:

- `windows_10_1809 10.0.17763.9245`
- `windows_server_2019 10.0.17763.9245`
- `windows_server_2022 10.0.20348.5622`
- `windows_server_2025 10.0.26100.33438`