Exposure of Sensitive System Information to an Unauthorized Control Sphere in Microsoft Windows and Windows Server - CVE-2026-83893
Published: October 14, 2026
Vulnerability identifier: #VU155037
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-2026-83893
CWE-ID: CWE-497
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive file path information.
The vulnerability exists due to exposure of sensitive system information to an unauthorized control sphere in Windows Clipboard User Service when accessing the service locally. A local user can access exposed file system information to disclose sensitive file path information.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-83893
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7807, 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 2019 10.0.17763.9376, 2022 10.0.20348.5761, 2025 10.0.26100.33650
Windows Server - addressed in versions 2019 10.0.17763.9376, 2022 10.0.20348.5761, 2025 10.0.26100.33650