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

highCVSS 7.1CVE-2026-56171
Exposure of private personal information to an unauthorized actor in Windows RDP allows an unauthorized attacker to disclose information over a network.

CSIRTS triage

vendor: Microsoftproduct: Windows Remote Desktop Protocol (RDP)Information disclosure
What
Exposure of private personal information allows an unauthorized attacker to disclose information over a network.
Who is affected
Users of Windows RDP are affected.
Urgency
Remediation is high urgency due to the potential for information disclosure.
Action
Update Windows RDP to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.1
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56171

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-56171coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows Remote Desktop

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center