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{"affected": [{"affectedData": [{"product": "Microsoft Dataverse", "vendor": "Microsoft", "versions": [{"status": "affected", "version": "-"}]}], "source": "[email protected]"}], "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network."}], "id": "CVE-2026-77903", "lastModified": "2026-09-18T15:17:12.863", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 6.0, "source": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-77903", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-18T14:11:57.707545Z", "version": "2.0.3"}}]}, "published": "2026-09-17T23:18:44.993", "references": [{"source": "[email protected]", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77903"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "[email protected]", "type": "Secondary"}]}

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