{"id":"CVE-2021-44466","aliases":["EUVD-2021-31303","GHSA-57mh-5gf7-8mcg"],"status":"published","title":"Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access...","description":"Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00412,"percentile":0.3592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-732"],"published":"2021-12-30T21:31:24Z","modified":"2026-06-17T04:12:23Z","products":[{"vendor":"leap","product":"bitmask_riseup_vpn"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2021-58","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44466"},{"url":"https://github.com/advisories/GHSA-57mh-5gf7-8mcg"}],"sources":{"cve":[{"id":"CVE-2021-44466","description":"Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.","status":"published","published":"2021-12-30T21:31:24Z","modified":"2024-08-04T04:25:16.432Z","updated_at":"2026-11-02T14:33:00.819444Z"}],"euvd":[{"id":"EUVD-2021-31303","description":"Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.","status":"published","published":"2021-12-30T21:31:24Z","modified":"2024-08-04T04:25:16Z","updated_at":"2026-11-03T03:08:29.150764Z"}],"ghsa":[{"id":"GHSA-57mh-5gf7-8mcg","title":"Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access...","description":"Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.","status":"published","published":"2021-12-31T00:00:20Z","modified":"2023-01-27T05:01:30Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:41:54.261914Z"}],"nvd":[{"id":"CVE-2021-44466","description":"Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.","status":"published","published":"2021-12-30T22:15:09.957Z","modified":"2026-06-17T04:12:23.473Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:N/AC:H/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:07:02.977492Z"}]}}