{"id":"CVE-2021-43412","aliases":["EUVD-2021-30347","GHSA-x9rv-39rr-f53c"],"status":"published","title":"An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification...","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.0036,"percentile":0.30241,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2021-11-07T17:07:12Z","modified":"2026-06-17T04:10:56Z","products":[{"vendor":"gnu","product":"hurd"}],"references":[{"url":"https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html","tags":["x_refsource_MISC","x_transferred","Exploit","Mailing List","Vendor Advisory"]},{"url":"https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43412"},{"url":"https://www.mail-archive.com/bug-hurd@gnu.org/msg32116.html"},{"url":"https://github.com/advisories/GHSA-x9rv-39rr-f53c"}],"sources":{"cve":[{"id":"CVE-2021-43412","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.","status":"published","published":"2021-11-07T17:07:12Z","modified":"2024-08-04T03:55:29.077Z","updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-30347","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.","status":"published","published":"2021-11-07T17:07:12Z","modified":"2024-08-04T03:55:29Z","updated_at":"2026-11-03T03:24:14.245608Z"}],"ghsa":[{"id":"GHSA-x9rv-39rr-f53c","title":"An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification...","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.","status":"published","published":"2022-05-24T19:19:56Z","modified":"2023-01-30T05:03:45Z","cwes":["CWE-416"],"updated_at":"2026-11-02T14:46:54.242582Z"}],"nvd":[{"id":"CVE-2021-43412","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.","status":"published","published":"2021-11-07T18:15:07.737Z","modified":"2026-06-17T04:10:56.31Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}