{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62839", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-07-14T21:10:38.083Z", "datePublished": "2026-08-11T17:07:18.702Z", "dateUpdated": "2026-08-11T18:52:24.800Z"}, "containers": {"cna": {"title": "Microsoft SharePoint Server Spoofing Vulnerability", "datePublic": "2026-08-11T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "16.0.0", "versionEndExcluding": "16.0.5565.1001"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*", "versionStartIncluding": "16.0.0", "versionEndExcluding": "16.0.10417.20198"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*", "versionStartIncluding": "16.0.0", "versionEndExcluding": "16.0.19725.20522"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft SharePoint Enterprise Server 2016", "platforms": ["x64-based Systems"], "versions": [{"version": "16.0.0", "lessThan": "16.0.5565.1001", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SharePoint Server 2019", "platforms": ["x64-based Systems"], "versions": [{"version": "16.0.0", "lessThan": "16.0.10417.20198", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SharePoint Server Subscription Edition", "platforms": ["x64-based Systems"], "versions": [{"version": "16.0.0", "lessThan": "16.0.19725.20522", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-522: Insufficiently Protected Credentials", "lang": "en-US", "type": "CWE", "cweId": "CWE-522"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-08-11T18:52:24.800Z"}, "references": [{"name": "Microsoft SharePoint Server Spoofing Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62839"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C"}}]}}}

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{"affected": [{"affectedData": [{"platforms": ["x64-based Systems"], "product": "Microsoft SharePoint Enterprise Server 2016", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.5565.1001", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SharePoint Server 2019", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.10417.20198", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SharePoint Server Subscription Edition", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.19725.20522", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network."}], "id": "CVE-2026-62839", "lastModified": "2026-08-11T18:53:55.320", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-08-11T17:18:37.453", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62839"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-522"}], "source": "secure@microsoft.com", "type": "Primary"}]}

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