Security advisory

{
  "id": "21bcbbbe822211f749b6877a8f7ce7077f10554364f48c4a9bc688f467325892",
  "url": "https://osv.dev/vulnerability/CVE-2021-3626",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3626",
    "summary": "The Windows version of Multipass before 1.7.0 allowed any local process to connect to the localhost TCP control socket to perform mounts from the operating system to a guest, allowing for privilege escalation.",
    "evidence": "osv:CVE-2021-3626",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3626",
      "aliases": [
        "CVE-2021-3626"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/canonical/multipass",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "845ea4a19d2af5a771ba5c0595a639c9542457bf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:canonical:multipass:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.7.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.6.0-rc",
            "v1.5.0-rc",
            "v1.6.0-dev",
            "v1.4.0-rc",
            "v1.5.0-dev",
            "v1.4.0-dev",
            "v1.3.0-rc",
            "v1.3.0-dev",
            "v1.2.1",
            "v1.2.0-rc",
            "v1.2.0",
            "v1.1.0-rc",
            "v1.2.0-dev",
            "v1.1.0-dev",
            "v0.10.1-rc",
            "v0.10.0-rc",
            "v0.11.0-dev",
            "v0.9.0-rc",
            "v0.10.0-dev",
            "v0.8.0",
            "v0.9.0-dev",
            "v0.8.0-rc",
            "v0.7.0-rc",
            "v0.8.0-dev",
            "v0.7.0-dev2",
            "v0.6.0-rc",
            "v0.7.0-dev",
            "v0.6.0-pre1",
            "v0.5",
            "2018.12.1-rc1",
            "2018.11.1-pre3",
            "2018.11.1-pre2",
            "2018.11.1-pre1",
            "2018.10.1",
            "2018.4.2",
            "2018.4.1",
            "2017.2.3",
            "2017.2.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3626.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:52.615630677Z",
      "provider": "osv",
      "references": [
        "https://github.com/canonical/multipass/pull/2150"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-3626",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386331,
  "published_at": "2021-10-01T03:15:06.913+00:00"
}