Use of uninitialized resource in Windows and Windows Server - CVE-2026-55003
Published: July 15, 2026
Vulnerability identifier: #VU137744
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-55003
CWE-ID: CWE-908
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to usage of uninitialized resources in Windows Remote Desktop Protocol (RDP). A remote attacker can trigger uninitialized usage of resources and gain access to sensitive information on the system.
How to mitigate CVE-2026-55003
Install updates from vendor's website.