{"id":"CVE-2021-31847","aliases":["EUVD-2021-18722","GHSA-4h6j-v5px-xwg7"],"status":"published","title":"Improper privilege management in repair process of MA for Windows","description":"Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00399,"percentile":0.34571,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-347","CWE-427"],"published":"2021-09-22T13:25:18Z","modified":"2026-06-17T03:52:20Z","products":[{"vendor":"mcafee","product":"agent"},{"vendor":"mcafee,llc","product":"mcafee agent for windows"}],"references":[{"url":"https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10369","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1104/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31847"},{"url":"https://github.com/advisories/GHSA-4h6j-v5px-xwg7"}],"sources":{"cve":[{"id":"CVE-2021-31847","title":"Improper privilege management in repair process of MA for Windows","description":"Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.","status":"published","published":"2021-09-22T13:25:18Z","modified":"2024-08-03T23:10:30.809Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-269","CWE-347"],"updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-18722","description":"Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.","status":"published","published":"2021-09-22T13:25:18Z","modified":"2024-08-03T23:10:30Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:24:37.97373Z"}],"ghsa":[{"id":"GHSA-4h6j-v5px-xwg7","title":"Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to...","description":"Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.","status":"published","published":"2022-05-24T19:15:26Z","modified":"2023-11-24T05:04:41Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269","CWE-347","CWE-427"],"updated_at":"2026-11-02T14:55:05.78804Z"}],"nvd":[{"id":"CVE-2021-31847","description":"Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.","status":"published","published":"2021-09-22T14:15:07.563Z","modified":"2026-06-17T03:52:20.417Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-269","CWE-347","CWE-427"],"updated_at":"2026-11-02T14:06:58.933037Z"}]}}