Improper access control in Windows Server - CVE-2026-26183
Published: April 14, 2026
Vulnerability identifier: #VU126019
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-26183
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in Remote Access Management service/API (RPC server). A local user can bypass implemented security restrictions and gain elevated privileges on the system.
Affected software
Windows Server
How to mitigate CVE-2026-26183
Install updates from vendor's website.
Windows Server - addressed in versions 2012 R2 6.3.9600.23132, 2012 6.2.9200.26026, 2016 10.0.14393.9060, 2019 10.0.17763.8644, 2022 23H2 10.0.25398.2274, 2022 10.0.20348.5020, 2025 10.0.26100.32690