CVE-2026-66306

{"id": "CVE-2026-66306", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66306", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-08T18:52:48.290572Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Skype for Business Server 2015 CU13", "versions": [{"status": "affected", "version": "9319.0", "lessThan": "6.0.9319.885", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Skype for Business Server 2019 CU8", "versions": [{"status": "affected", "version": "2046.0", "lessThan": "7.0.2046.569", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Skype for Business Server Subscription Edition CU1", "versions": [{"status": "affected", "version": "2046.0", "lessThan": "7.0.2046.879", "versionType": "custom"}], "platforms": ["x64-based Systems"]}]}], "published": "2026-09-08T19:18:08.200", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66306", "source": "secure@microsoft.com"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Primary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-209"}]}], "descriptions": [{"lang": "en", "value": "Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network."}], "lastModified": "2026-09-08T19:22:18.470", "sourceIdentifier": "secure@microsoft.com"}