{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.0.31"
              },
              {
                "introduced": "9.0.0"
              },
              {
                "fixed": "9.0.20"
              },
              {
                "introduced": "10.0.0"
              },
              {
                "fixed": "10.0.12"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "d78b3180414d35d6c7d136db753474e2ae2b33df"
            },
            {
              "fixed": "6b7ac250358e700fa8dd8c5573045af06d262802"
            },
            {
              "introduced": "e18becd6171b8eb0eb4ec7ea8a0280cacfcee36b"
            },
            {
              "fixed": "6b7ac250358e700fa8dd8c5573045af06d262802"
            },
            {
              "introduced": "0e06b3b745aaf3f2f96e5f163773d20f8c7f7f50"
            },
            {
              "fixed": "6b7ac250358e700fa8dd8c5573045af06d262802"
            }
          ],
          "repo": "https://github.com/dotnet/core",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "17.14.0"
          },
          {
            "fixed": "17.14.40"
          }
        ],
        "source": "CPE_RANGE",
        "vendor_product": "microsoft:visual_studio_2022"
      },
      {
        "cpes": [
          "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "18.9.0"
          },
          {
            "fixed": "18.9.3"
          }
        ],
        "source": "CPE_RANGE",
        "vendor_product": "microsoft:visual_studio_2026"
      },
      {
        "cpes": [
          "cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:*",
          "cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:*",
          "cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:*",
          "cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:*",
          "cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:*",
          "cpe:2.3:a:microsoft:.net:11.0.0:preview6:*:*:*:*:*:*",
          "cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "11.0.0-preview1"
          },
          {
            "last_affected": "11.0.0-preview1"
          },
          {
            "introduced": "11.0.0-preview2"
          },
          {
            "last_affected": "11.0.0-preview2"
          },
          {
            "introduced": "11.0.0-preview3"
          },
          {
            "last_affected": "11.0.0-preview3"
          },
          {
            "introduced": "11.0.0-preview4"
          },
          {
            "last_affected": "11.0.0-preview4"
          },
          {
            "introduced": "11.0.0-preview5"
          },
          {
            "last_affected": "11.0.0-preview5"
          },
          {
            "introduced": "11.0.0-preview6"
          },
          {
            "last_affected": "11.0.0-preview6"
          },
          {
            "introduced": "11.0.0-preview7"
          },
          {
            "last_affected": "11.0.0-preview7"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "microsoft:.net"
      }
    ]
  },
  "details": "Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.",
  "id": "CVE-2026-69439",
  "modified": "2026-10-01T03:30:43.809456827Z",
  "published": "2026-09-08T18:19:07.960Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69439"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}