{"id":"CVE-2021-23883","aliases":["EUVD-2021-10809","GHSA-fcrq-5g5m-qh6j"],"status":"published","title":"Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS)","description":"A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows a local administrator to cause Windows to crash via a specific system call which is not handled correctly. This varies by machine and had partial protection prior to this update.","severity":{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00276,"percentile":0.20134,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2021-02-10T09:25:13Z","modified":"2026-06-17T03:38:58Z","products":[{"vendor":"mcafee","product":"endpoint_security"},{"vendor":"mcafee llc","product":"endpoint security (ens) for windows"}],"references":[{"url":"https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10345","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23883"},{"url":"https://github.com/advisories/GHSA-fcrq-5g5m-qh6j"}],"sources":{"cve":[{"id":"CVE-2021-23883","title":"Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS)","description":"A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows a local administrator to cause Windows to crash via a specific system call which is not handled correctly. This varies by machine and had partial protection prior to this update.","status":"published","published":"2021-02-10T09:25:13.493Z","modified":"2024-09-17T01:41:53.554Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-10809","description":"A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows a local administrator to cause Windows to crash via a specific system call which is not handled correctly. This varies by machine and had partial protection prior to this update.","status":"published","published":"2021-02-10T09:25:13Z","modified":"2024-09-17T01:41:53Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:28:47.09844Z"}],"ghsa":[{"id":"GHSA-fcrq-5g5m-qh6j","title":"A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to...","description":"A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows a local administrator to cause Windows to crash via a specific system call which is not handled correctly. This varies by machine and had partial protection prior to this update.","status":"published","published":"2022-05-24T17:41:46Z","modified":"2023-11-24T05:05:32Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:55:05.78804Z"}],"nvd":[{"id":"CVE-2021-23883","description":"A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows a local administrator to cause Windows to crash via a specific system call which is not handled correctly. This varies by machine and had partial protection prior to this update.","status":"published","published":"2021-02-10T10:15:13.473Z","modified":"2026-06-17T03:38:58.723Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:06:50.031227Z"}]}}