{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-70159", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-08-03T23:36:51.174Z", "datePublished": "2026-10-13T19:00:26.047Z", "dateUpdated": "2026-10-23T17:48:33.836Z"}, "containers": {"cna": {"title": "ASP.NET Core Denial of Service Vulnerability", "datePublic": "2026-10-13T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:microsoft.aspnetcore.signalr.common:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:microsoft.aspnetcore.signalr.core:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.0.0", "versionEndExcluding": "1.2.14"}, {"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": "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"}]}, {"vendor": "Microsoft", "product": "Microsoft.AspNetCore.SignalR.Common", "platforms": [".NET 10.0 runtime installed on Linux", ".NET 10.0 runtime installed on Mac OS", ".NET 10.0 runtime installed on Windows", ".NET 11.0 runtime installed on Linux", ".NET 11.0 runtime installed on Mac OS", ".NET 11.0 runtime installed on Windows", ".NET 8.0 runtime installed on Linux", ".NET 8.0 runtime installed on Mac OS", ".NET 8.0 runtime installed on Windows", ".NET 9.0 runtime installed on Linux", ".NET 9.0 runtime installed on Mac OS", ".NET 9.0 runtime installed on Windows"], "versions": [{"version": "10.0.0", "lessThan": "10.0.13", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft.AspNetCore.SignalR.Core", "platforms": [".NET 10.0 runtime installed on Linux", ".NET 10.0 runtime installed on Mac OS", ".NET 10.0 runtime installed on Windows", ".NET 11.0 runtime installed on Linux", ".NET 11.0 runtime installed on Mac OS", ".NET 11.0 runtime installed on Windows", ".NET 8.0 runtime installed on Linux", ".NET 8.0 runtime installed on Mac OS", ".NET 8.0 runtime installed on Windows", ".NET 9.0 runtime installed on Linux", ".NET 9.0 runtime installed on Mac OS", ".NET 9.0 runtime installed on Windows"], "versions": [{"version": "1.0.0", "lessThan": "1.2.14", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-770: Allocation of Resources Without Limits or Throttling", "lang": "en-US", "type": "CWE", "cweId": "CWE-770"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-10-23T17:48:33.836Z"}, "references": [{"name": "ASP.NET Core Denial of Service Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70159"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-70159", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-13T22:07:33.035384Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-13T22:16:35.768Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-70159", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-13T22:07:33.035384Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-13T22:12:32.067Z"}}], "cna": {"title": "ASP.NET Core Denial of Service Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"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"}]}, {"vendor": "Microsoft", "product": "Microsoft.AspNetCore.SignalR.Common", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.13", "versionType": "custom"}], "platforms": [".NET 10.0 runtime installed on Linux", ".NET 10.0 runtime installed on Mac OS", ".NET 10.0 runtime installed on Windows", ".NET 11.0 runtime installed on Linux", ".NET 11.0 runtime installed on Mac OS", ".NET 11.0 runtime installed on Windows", ".NET 8.0 runtime installed on Linux", ".NET 8.0 runtime installed on Mac OS", ".NET 8.0 runtime installed on Windows", ".NET 9.0 runtime installed on Linux", ".NET 9.0 runtime installed on Mac OS", ".NET 9.0 runtime installed on Windows"]}, {"vendor": "Microsoft", "product": "Microsoft.AspNetCore.SignalR.Core", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.2.14", "versionType": "custom"}], "platforms": [".NET 10.0 runtime installed on Linux", ".NET 10.0 runtime installed on Mac OS", ".NET 10.0 runtime installed on Windows", ".NET 11.0 runtime installed on Linux", ".NET 11.0 runtime installed on Mac OS", ".NET 11.0 runtime installed on Windows", ".NET 8.0 runtime installed on Linux", ".NET 8.0 runtime installed on Mac OS", ".NET 8.0 runtime installed on Windows", ".NET 9.0 runtime installed on Linux", ".NET 9.0 runtime installed on Mac OS", ".NET 9.0 runtime installed on Windows"]}], "datePublic": "2026-10-13T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70159", "name": "ASP.NET Core Denial of Service Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-770", "description": "CWE-770: Allocation of Resources Without Limits or Throttling"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:microsoft.aspnetcore.signalr.common:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.13", "versionStartIncluding": "10.0.0"}, {"criteria": "cpe:2.3:a:microsoft:microsoft.aspnetcore.signalr.core:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "1.2.14", "versionStartIncluding": "1.0.0"}, {"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": "2026-10-23T17:48:33.836Z"}}}, "cveMetadata": {"cveId": "CVE-2026-70159", "state": "PUBLISHED", "dateUpdated": "2026-10-23T17:48:33.836Z", "dateReserved": "2026-08-03T23:36:51.174Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-10-13T19:00:26.047Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"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"}]}, {"platforms": [".NET 10.0 runtime installed on Linux", ".NET 10.0 runtime installed on Mac OS", ".NET 10.0 runtime installed on Windows", ".NET 11.0 runtime installed on Linux", ".NET 11.0 runtime installed on Mac OS", ".NET 11.0 runtime installed on Windows", ".NET 8.0 runtime installed on Linux", ".NET 8.0 runtime installed on Mac OS", ".NET 8.0 runtime installed on Windows", ".NET 9.0 runtime installed on Linux", ".NET 9.0 runtime installed on Mac OS", ".NET 9.0 runtime installed on Windows"], "product": "Microsoft.AspNetCore.SignalR.Common", "vendor": "Microsoft", "versions": [{"lessThan": "10.0.13", "status": "affected", "version": "10.0.0", "versionType": "custom"}]}, {"platforms": [".NET 10.0 runtime installed on Linux", ".NET 10.0 runtime installed on Mac OS", ".NET 10.0 runtime installed on Windows", ".NET 11.0 runtime installed on Linux", ".NET 11.0 runtime installed on Mac OS", ".NET 11.0 runtime installed on Windows", ".NET 8.0 runtime installed on Linux", ".NET 8.0 runtime installed on Mac OS", ".NET 8.0 runtime installed on Windows", ".NET 9.0 runtime installed on Linux", ".NET 9.0 runtime installed on Mac OS", ".NET 9.0 runtime installed on Windows"], "product": "Microsoft.AspNetCore.SignalR.Core", "vendor": "Microsoft", "versions": [{"lessThan": "1.2.14", "status": "affected", "version": "1.0.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network."}], "id": "CVE-2026-70159", "lastModified": "2026-10-22T22:18:32.240", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-70159", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-13T22:07:33.035384Z", "version": "2.0.3"}}]}, "published": "2026-10-13T19:19:29.390", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70159"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "secure@microsoft.com", "type": "Secondary"}]}

{"csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.", "Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network."], "name": "CVE-2026-70159", "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:10", "fix_state": "Affected", "package_name": "dotnet8.0", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "dotnet9.0", "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:8", "fix_state": "Affected", "package_name": "dotnet8.0", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "dotnet9.0", "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:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "dotnet8.0", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "dotnet9.0", "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": "Affected", "package_name": "dotnet8.0", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "dotnet9.0", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-13T17:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-70159\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-70159"], "threat_severity": "Important"}