Information disclosure in Windows and Windows Server - CVE-2026-34328
Published: July 17, 2026
Vulnerability identifier: #VU137955
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-34328
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper access control in Windows Audio Service when exposing service memory information locally. A local user can access memory address information belonging to the EventLog Windows service to disclose sensitive information.
The disclosed information is limited to memory addresses belonging to the EventLog Windows service.
How to mitigate CVE-2026-34328
Install security update from vendor's website.