CVE-2026-96957

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-96957", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-09-23T20:35:19.929Z", "datePublished": "2026-10-13T19:01:27.149Z", "dateUpdated": "2026-11-10T20:45:21.365Z"}, "containers": {"cna": {"title": ".NET Security Feature Bypass Vulnerability", "datePublic": "2026-10-13T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.0.402"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "11.0.0", "versionEndExcluding": "11.0.100-rc.2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*", "versionStartIncluding": "18.10.0", "versionEndExcluding": "18.10.4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "versionStartIncluding": "17.14.0", "versionEndExcluding": "17.14.42"}]}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 10.0 runtime", "versions": [{"version": "10.0.0", "lessThan": "10.0.402", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 11.0 runtime", "versions": [{"version": "11.0.0", "lessThan": "11.0.100-rc.2", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"version": "17.14.0", "lessThan": "17.14.42", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.10", "versions": [{"version": "18.10.0", "lessThan": "18.10.4", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-347: Improper Verification of Cryptographic Signature", "lang": "en-US", "type": "CWE", "cweId": "CWE-347"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-11-10T20:45:21.365Z"}, "references": [{"name": ".NET Security Feature Bypass Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96957"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-08T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-96957"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-14T03:57:05.731Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-96957", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-13T19:38:09.783591Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-13T19:38:10.627Z"}}], "cna": {"title": ".NET Security Feature Bypass Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 10.0 runtime", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.402", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 11.0 runtime", "versions": [{"status": "affected", "version": "11.0.0", "lessThan": "11.0.100-rc.2", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"status": "affected", "version": "17.14.0", "lessThan": "17.14.42", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.10", "versions": [{"status": "affected", "version": "18.10.0", "lessThan": "18.10.4", "versionType": "custom"}]}], "datePublic": "2026-10-13T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96957", "name": ".NET Security Feature Bypass Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-347", "description": "CWE-347: Improper Verification of Cryptographic Signature"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.402", "versionStartIncluding": "10.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "11.0.100-rc.2", "versionStartIncluding": "11.0.0"}, {"criteria": "cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "18.10.4", "versionStartIncluding": "18.10.0"}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "17.14.42", "versionStartIncluding": "17.14.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-11-10T20:45:21.365Z"}}}, "cveMetadata": {"cveId": "CVE-2026-96957", "state": "PUBLISHED", "dateUpdated": "2026-11-10T20:45:21.365Z", "dateReserved": "2026-09-23T20:35:19.929Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-10-13T19:01:27.149Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": ".NET 10.0 runtime", "vendor": "Microsoft", "versions": [{"lessThan": "10.0.402", "status": "affected", "version": "10.0.0", "versionType": "custom"}]}, {"product": ".NET 11.0 runtime", "vendor": "Microsoft", "versions": [{"lessThan": "11.0.100-rc.2", "status": "affected", "version": "11.0.0", "versionType": "custom"}]}, {"product": "Microsoft Visual Studio 2022 version 17.14", "vendor": "Microsoft", "versions": [{"lessThan": "17.14.42", "status": "affected", "version": "17.14.0", "versionType": "custom"}]}, {"product": "Microsoft Visual Studio 2026 version 18.10", "vendor": "Microsoft", "versions": [{"lessThan": "18.10.4", "status": "affected", "version": "18.10.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "matchCriteriaId": "C27EB901-DF95-4DC2-AF6A-A95FE10E9A4C", "versionEndExcluding": "10.0.13", "versionStartIncluding": "10.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:*", "matchCriteriaId": "5DACF2FE-CF61-43E4-8A3F-F7A358DE8A01", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:*", "matchCriteriaId": "280B2E64-3163-40AB-A048-14D58DEC42FD", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:*", "matchCriteriaId": "12357908-3294-46EF-85A0-DA3F86C97489", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:*", "matchCriteriaId": "849FC8F5-86CD-4B5D-ADFD-9CB16EA75D09", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:*", "matchCriteriaId": "C86E87E2-B236-4AC9-B6C3-64B9CDEC91EB", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview6:*:*:*:*:*:*", "matchCriteriaId": "9B14656E-2BB0-4B4B-B518-F3D5108253ED", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:*", "matchCriteriaId": "E09C9DB3-F42C-4442-9CF0-24A780D094C8", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:11.0.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "67035E86-61F5-421E-B243-EF64458AD8BA", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E", "vulnerable": false}, {"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:-:*:*", "matchCriteriaId": "96141593-C09D-450C-AF0A-FE88CF17C5A0", "versionEndExcluding": "17.14.42", "versionStartIncluding": "17.14.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:-:*:*", "matchCriteriaId": "0B644B93-47BA-4F34-BE8A-F58F27C62192", "versionEndExcluding": "18.10.4", "versionStartIncluding": "18.10.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network."}], "id": "CVE-2026-96957", "lastModified": "2026-10-22T22:20:08.840", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-96957", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-10-13T19:22:08.267", "references": [{"source": "secure@microsoft.com", "tags": ["Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96957"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "secure@microsoft.com", "type": "Secondary"}]}

{"csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-347", "details": ["Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network."], "name": "CVE-2026-96957", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "dotnet10.0", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "dotnet10.0", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "dotnet10.0", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "dotnet10.0", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "dotnet8.0", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-13T17:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-96957\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-96957"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[10.0.0,10.0.402)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": ".NET 10.0", "source": "cna", "vendor": "Microsoft"}, "product": ".net", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[11.0.0,11.0.100-rc.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": ".NET 11.0", "source": "cna", "vendor": "Microsoft"}, "product": ".net", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[17.14.0,17.14.42)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft Visual Studio 2022 version 17.14", "source": "cna", "vendor": "Microsoft"}, "product": "microsoft_visual_studio_2022_version_17.14", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[18.10.0,18.10.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft Visual Studio 2026 version 18.10", "source": "cna", "vendor": "Microsoft"}, "product": "microsoft_visual_studio_2026_version_18.10", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[17.14.0,17.14.42)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "product": "visual_studio_2022", "vendor": "microsoft"}], "created": "2026-10-14T13:45:05.217148+00:00", "updated": "2026-11-10T09:00:15.219746+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$.net", "microsoft$PRODUCT$microsoft_visual_studio_2022_version_17.14", "microsoft$PRODUCT$microsoft_visual_studio_2026_version_18.10", "microsoft$PRODUCT$visual_studio_2022"]}