CVE-2026-58649

{"id": "CVE-2026-58649", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-58649", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-08T19:45:24.737506Z"}}], "cvssMetricV31": [{"type": "Secondary", "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": ".NET 10.0 runtime", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.111, 10.0.400", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 11.0 runtime", "versions": [{"status": "affected", "version": "11.0.0", "lessThan": "11.0 RC1", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 8.0 runtime", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.130, 8.0.424", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0 runtime", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.120, 9.0.317", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"status": "affected", "version": "17.14.0", "lessThan": "17.14.40", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.9", "versions": [{"status": "affected", "version": "18.9.0", "lessThan": "18.9.3", "versionType": "custom"}]}]}], "published": "2026-09-08T18:17:44.380", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58649", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-346"}]}], "descriptions": [{"lang": "en", "value": "Origin validation error in .NET allows an unauthorized attacker to disclose information over a network."}], "lastModified": "2026-10-30T22:16:56.083", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5DACF2FE-CF61-43E4-8A3F-F7A358DE8A01"}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "280B2E64-3163-40AB-A048-14D58DEC42FD"}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12357908-3294-46EF-85A0-DA3F86C97489"}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "849FC8F5-86CD-4B5D-ADFD-9CB16EA75D09"}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C86E87E2-B236-4AC9-B6C3-64B9CDEC91EB"}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9B14656E-2BB0-4B4B-B518-F3D5108253ED"}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E09C9DB3-F42C-4442-9CF0-24A780D094C8"}, {"criteria": "cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CF859D90-AD39-48FD-BC10-95C60DD12385", "versionEndExcluding": "8.0.130", "versionStartIncluding": "8.0.100"}, {"criteria": "cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D2EAEBB6-DF12-41DF-A0B4-CCCF7AA4FE53", "versionEndExcluding": "8.0.424", "versionStartIncluding": "8.0.200"}, {"criteria": "cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "57A6FE38-7904-4C39-ADAB-F3D6086A709F", "versionEndExcluding": "9.0.120", "versionStartIncluding": "9.0.100"}, {"criteria": "cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8A1D49A2-10B6-4949-B5A2-F506DFEBC090", "versionEndExcluding": "9.0.317", "versionStartIncluding": "9.0.200"}, {"criteria": "cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B8BF908-8EF3-4CB9-83C2-617DB83177BB", "versionEndExcluding": "10.0.111", "versionStartIncluding": "10.0.100"}, {"criteria": "cpe:2.3:a:microsoft:.net_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "44F269B4-1601-4BE6-81F2-44E3BF295470", "versionEndExcluding": "10.0.400", "versionStartIncluding": "10.0.200"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:-:*:*", "vulnerable": true, "matchCriteriaId": "8C6D8096-86B5-4614-BF3F-05B674F8E9CC", "versionEndExcluding": "17.14.40", "versionStartIncluding": "17.14.0"}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C66064BF-3349-43FF-8A22-9370663193DE", "versionEndExcluding": "18.9.3", "versionStartIncluding": "18.9.0"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}