Out-of-bounds read in Microsoft Windows and Windows Server - CVE-2026-69443
Published: September 8, 2026
Vulnerability identifier: #VU147699
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-69443
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose information.
The vulnerability exists due to an out-of-bounds read in Windows Device Health Attestation (DHA) when handling network requests. A remote attacker can send a specially crafted network request to disclose information.
Successful exploitation could expose portions of process memory, including heap memory from a privileged process running on the server.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-69443
Install security update from vendor's website.
Microsoft Windows - update to 10 1809 10.0.17763.9245
Windows Server - addressed in versions 2019 10.0.17763.9245, 2022 10.0.20348.5622, 2025 10.0.26100.33438
Windows Server - addressed in versions 2019 10.0.17763.9245, 2022 10.0.20348.5622, 2025 10.0.26100.33438