CVE-2026-70159

{
  "id": "CVE-2026-70159",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-13T19:19:29.390",
  "lastModified": "2026-10-22T22:18:32.240",
  "vulnStatus": "Undergoing Analysis",
  "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."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-13T22:07:33.035384Z",
          "id": "CVE-2026-70159",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70159",
      "source": "[email protected]"
    }
  ]
}