CVE-2026-69577: Microsoft Azure Attestation service and Device Health Attestation Service Information Disclosure Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Category

Information Disclosure

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Oct

Released

2026-10-13

Description

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

FAQ

What type of information could be disclosed by this vulnerability? An attacker who successfully exploited this vulnerability could view heap memory from a privileged process running on the server.

Affected Products (6)

Windows

• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows Server 2025 (Server Core installation)
• Windows Server 2025

Security Updates (3)

• 5126651
• 5126655
• 5126646

Acknowledgments

41ae55e9310ff27fa6f26af4727e5590

Revision History

• 2026-10-13: Information published.