What is CVE-2026-56171?

CVE-2026-56171 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Which CVE IDs does CVE-2026-56171 cover?

CVE-2026-56171 covers the following CVE IDs: CVE-2026-56171. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-56171?

CVE-2026-56171 has a CVSS v3 base score of 7.1, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-56171?

CVE-2026-56171 affects 2 products, including: Remote Desktop Web Client; Windows Admin Center.

CVE-2026-56171HighCVSS 7.1

Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 17, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-56171 →

📋 Description

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

🎯 Affected products2

Remote Desktop Web Client
Windows Admin Center

✅ Remediation

KBRelease Notes (Security Update) — fixed build 2.7.4 KBRelease Notes (Security Update) — fixed build 2.1.65.2

🔗 References (4)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56171
patchhttp://aka.ms/downloadWAC
referencehttps://techcommunity.microsoft.com/blog/windows-admin-center-blog/windows-admin-center-version-2606-is-now-generally-available/4530811
patchhttps://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/web-client-whats-new