CVE-2026-56171

HIGH

Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Title source: cna
STIX 2.1

Description

Exposure of private personal information to an unauthorized actor in Windows RDP allows an unauthorized attacker to disclose information over a network.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56171

Scores

CVSS v3 7.1
EPSS 0.0048
EPSS Percentile 38.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-359
Status published
Products (4)
Microsoft/Remote Desktop Web Client 2.0.0.0 - 2.1.65.2
microsoft/remote_desktop_web_client < 2.1.65.2
Microsoft/Windows Admin Center 1809.0 - 2.7.4
microsoft/windows_admin_center < 2606
Published Jul 17, 2026
Tracked Since Jul 18, 2026