{"id":"CVE-2021-3626","aliases":["EUVD-2021-26929","GHSA-68wj-3pj9-r3hp"],"status":"published","title":"Windows version of Multipass unauthenticated localhost tcp control socket can perform mounts","description":"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.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00249,"percentile":0.16342,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-284","CWE-73"],"published":"2021-10-01T02:35:19Z","modified":"2026-10-20T10:54:52Z","products":[{"vendor":"canonical","product":"multipass"}],"references":[{"url":"https://github.com/canonical/multipass/pull/2150","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3626"},{"url":"https://github.com/advisories/GHSA-68wj-3pj9-r3hp"}],"sources":{"cve":[{"id":"CVE-2021-3626","title":"Windows version of Multipass unauthenticated localhost tcp control socket can perform mounts","description":"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.","status":"published","published":"2021-10-01T02:35:19.696Z","modified":"2024-09-17T03:23:37.922Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-73","CWE-284"],"updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-26929","description":"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.","status":"published","published":"2021-10-01T02:35:19Z","modified":"2024-09-17T03:23:37Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:32.08327Z"}],"ghsa":[{"id":"GHSA-68wj-3pj9-r3hp","title":"The Windows version of Multipass before 1.7.0 allowed any local process to connect to the...","description":"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.","status":"published","published":"2022-05-24T19:16:21Z","modified":"2023-01-30T05:02:33Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:46:39.888016Z"}],"nvd":[{"id":"CVE-2021-3626","description":"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.","status":"published","published":"2021-10-01T03:15:06.913Z","modified":"2026-06-17T04:05:27.97Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-73","CWE-284"],"updated_at":"2026-11-02T14:06:59.314106Z"}],"osv":[{"id":"CVE-2021-3626","description":"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.","status":"published","published":"2021-10-01T03:15:06.913Z","modified":"2026-10-20T10:54:52.615630677Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.434873Z"}]}}