Security advisory

{
  "id": "a07b3e61a278b3abddacdd15082c9e38e7af5436cb287986e766266b864728d4",
  "url": "https://osv.dev/vulnerability/CVE-2021-34477",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-34477",
    "summary": "Visual Studio Code .NET Runtime Elevation of Privilege Vulnerability",
    "evidence": "osv:CVE-2021-34477",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-34477",
      "aliases": [
        "CVE-2021-34477"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dotnet/vscode-dotnet-runtime",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3f49324c1feac191a7643e58c590745ae68a8ec7"
                },
                {
                  "fixed": "0b6504a157525b0107a68b4a2a2914782e389456"
                },
                {
                  "introduced": "c08767a6d248c6dc5dae2294fae2992af5ebf523"
                },
                {
                  "fixed": "0b6504a157525b0107a68b4a2a2914782e389456"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net_education_bundle_sdk_install_tool:*:*:*:*:*:visual_studio_code:*:*",
                    "range": [
                      {
                        "introduced": "0.6.0"
                      },
                      {
                        "fixed": "0.7.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net_install_tool_for_extension_authors:*:*:*:*:*:visual_studio_code:*:*",
                    "range": [
                      {
                        "introduced": "1.1.0"
                      },
                      {
                        "fixed": "1.2.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "SDK-v0.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34477.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:03.859071122Z",
      "provider": "osv",
      "references": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34477",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34477"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-34477",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440367,
  "published_at": "2021-07-14T18:15:11.26+00:00"
}