Exposure of Sensitive System Information to an Unauthorized Control Sphere in Microsoft Windows and Windows Server - CVE-2026-85793
Published: October 14, 2026
Vulnerability identifier: #VU155143
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-85793
CWE-ID: CWE-497
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose certain kernel memory content.
The vulnerability exists due to exposure of sensitive system information to an unauthorized control sphere in Windows Sysmain Service when accessing system information locally. A local user can exploit this information exposure to disclose certain kernel memory content.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-85793
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7807, 10 1607 10.0.14393.9612, 10 1809 10.0.17763.9376, 11 23H2 10.0.22631.7652, 11 24H2 10.0.26100.9711, 11 25H2 10.0.26200.9711, 11 26H1 10.0.28000.3231
Windows Server - addressed in versions 2016 10.0.14393.9612, 2019 10.0.17763.9376
Windows Server - addressed in versions 2016 10.0.14393.9612, 2019 10.0.17763.9376