CVE-2026-55003: Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Overview
- Severity
- Medium (CVSS 6.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
- Category
- Information Disclosure
- Exploit Status
- Not Exploited
- Exploitation Likelihood
- Unlikely
- Patch Tuesday
- 2026-Jul
- Released
- 2026-07-14
Description
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.
FAQ
According to the CVSS metric, user interaction is required (UI:R) and privileges required are none (PR:N). What does that mean for this vulnerability?
An unauthorized attacker must wait for a user to initiate a connection.
Affected Products (27)
Windows
- Windows 10 Version 1809 for 32-bit Systems
- Windows 10 Version 1809 for x64-based Systems
- Windows Server 2019
- Windows Server 2019 (Server Core installation)
- Windows Server 2022
- Windows 10 Version 21H2 for 32-bit Systems
- Windows 10 Version 21H2 for ARM64-based Systems
- Windows 10 Version 21H2 for x64-based Systems
- Windows Server 2025 (Server Core installation)
- Windows 11 Version 25H2 for ARM64-based Systems
- Windows 11 Version 25H2 for x64-based Systems
- Windows 11 Version 24H2 for ARM64-based Systems
- Windows 11 Version 24H2 for x64-based Systems
- Windows Server 2025
- Windows 11 version 26H1 for x64-based Systems
- Windows 11 Version 26H1 for ARM64-based Systems
- Windows 10 Version 1607 for 32-bit Systems
- Windows 10 Version 1607 for x64-based Systems
- Windows Server 2016
- Windows Server 2016 (Server Core installation)
ESU
- Windows 10 Version 22H2 for x64-based Systems
- Windows 10 Version 22H2 for ARM64-based Systems
- Windows 10 Version 22H2 for 32-bit Systems
- Windows Server 2012
- Windows Server 2012 (Server Core installation)
- Windows Server 2012 R2
- Windows Server 2012 R2 (Server Core installation)
Security Updates (9)
Acknowledgments
Anonymous
Revision History
- 2026-07-14: Information published.