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CVE-2026-56171— Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Quick assessment

Affected
Microsoft Remote Desktop Web Client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Remote Desktop Web Client是美国Microsoft公司的一款远程桌面Web客户端。 Microsoft Remote Desktop Web Client 2.1.65.2之前版本和Windows Admin Center 2.7.4之前版本存在信息泄露漏洞，该漏洞源于私人个人信息暴露给未经授权的用户，可能导致未经授权的攻击者通过网络披露信息。

CVSS 7.1 · High EPSS 0.66% · P50

Affected Version Matrix 2

VendorProduct Version RangeStatus
Microsoft Remote Desktop Web Client 2.0.0.0< 2.1.65.2 affected
Microsoft Windows Admin Center 1809.0< 2.7.4 affected
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I. Basic Information for CVE-2026-56171

Vulnerability Information
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Vulnerability Title
Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Exposure of private personal information to an unauthorized actor in Windows RDP allows an unauthorized attacker to disclose information over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
侵犯隐私
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Remote Desktop Web Client 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Remote Desktop Web Client是美国Microsoft公司的一款远程桌面Web客户端。 Microsoft Remote Desktop Web Client 2.1.65.2之前版本和Windows Admin Center 2.7.4之前版本存在信息泄露漏洞，该漏洞源于私人个人信息暴露给未经授权的用户，可能导致未经授权的攻击者通过网络披露信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Remote Desktop Web Client 2.0.0.0 ~ 2.1.65.2 -
Microsoft Windows Admin Center 1809.0 ~ 2.7.4 -

II. Public POCs for CVE-2026-56171

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III. Intelligence Information for CVE-2026-56171

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Vendor Advisories for CVE-2026-56171 (1)

IV. Related Vulnerabilities

Same vendor: Microsoft
Same weakness: CWE-359

V. Comments for CVE-2026-56171

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