{"id":"CVE-2021-22280","aliases":["EUVD-2021-9426","GHSA-x53h-2cjp-mwcx"],"status":"published","title":"DLL Hijacking Vulnerability in Automation Studio","description":"Improper DLL loading algorithms in B\u0026R Automation Studio versions \u003e=4.0 and \u003c4.12 may allow an authenticated local attacker to execute code in the context of the product.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00166,"percentile":0.05917,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-427"],"published":"2024-05-14T19:36:51Z","modified":"2026-06-17T03:36:55Z","products":[{"vendor":"b\u0026r industrial automation","product":"automation studio"},{"vendor":"br-automation","product":"automation_studio"}],"references":[{"url":"https://www.br-automation.com/fileadmin/2021-10_DLL_Hijacking_Vulnerability_in_Automation_Studio-7dd34511.pdf","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22280"},{"url":"https://github.com/advisories/GHSA-x53h-2cjp-mwcx"}],"sources":{"cve":[{"id":"CVE-2021-22280","title":"DLL Hijacking Vulnerability in Automation Studio","description":"Improper DLL loading algorithms in B\u0026R Automation Studio versions \u003e=4.0 and \u003c4.12 may allow an authenticated local attacker to execute code in the context of the product.","status":"published","published":"2024-05-14T19:36:51.93Z","modified":"2024-08-03T18:37:18.537Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-9426","description":"Improper DLL loading algorithms in B\u0026R Automation Studio versions \u003e=4.0 and \u003c4.12 may allow an authenticated local attacker to execute code in the context of the product.","status":"published","published":"2024-05-14T19:36:51Z","modified":"2024-08-03T18:37:18Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:03.183524Z"}],"ghsa":[{"id":"GHSA-x53h-2cjp-mwcx","title":"Improper DLL loading algorithms in B\u0026R Automation Studio may allow an authenticated local...","description":"Improper DLL loading algorithms in B\u0026R Automation Studio may allow an authenticated local attacker to\nexecute code with elevated privileges.\n\nThis issue affects Automation Studio versions before 4.12.","status":"published","published":"2024-05-14T21:34:44Z","modified":"2025-12-19T15:32:20Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20","CWE-427"],"updated_at":"2026-11-02T15:05:18.038899Z"}],"nvd":[{"id":"CVE-2021-22280","description":"Improper DLL loading algorithms in B\u0026R Automation Studio versions \u003e=4.0 and \u003c4.12 may allow an authenticated local attacker to execute code in the context of the product.","status":"published","published":"2024-05-14T20:15:11.263Z","modified":"2026-06-17T03:36:55.743Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-427","CWE-20"],"updated_at":"2026-11-02T14:07:08.163458Z"}]}}