CVE-2026-56171

{"id": "CVE-2026-56171", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-56171", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-21T19:20:45.809792Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Remote Desktop Web Client", "versions": [{"status": "affected", "version": "2.0.0.0", "lessThan": "2.1.65.2", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Windows Admin Center", "versions": [{"status": "affected", "version": "1809.0", "lessThan": "2.7.4", "versionType": "custom"}]}]}], "published": "2026-07-17T22:17:54.117", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56171", "source": "secure@microsoft.com"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-359"}]}], "descriptions": [{"lang": "en", "value": "Exposure of private personal information to an unauthorized actor in Windows RDP allows an unauthorized attacker to disclose information over a network."}], "lastModified": "2026-07-21T20:17:02.740", "sourceIdentifier": "secure@microsoft.com"}