{"id":"CVE-2021-40521","aliases":["EUVD-2021-27697","GHSA-fw83-hp96-3f54"],"status":"published","title":"Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.","description":"Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.0449,"percentile":0.91612,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-11-10T15:55:23Z","modified":"2026-06-17T04:07:04Z","products":[{"vendor":"airangel","product":"hsmx-app-1000_firmware"},{"vendor":"airangel","product":"hsmx-app-100_firmware"},{"vendor":"airangel","product":"hsmx-app-20000_firmware"},{"vendor":"airangel","product":"hsmx-app-25_firmware"},{"vendor":"airangel","product":"hsmx-app-5000_firmware"}],"references":[{"url":"https://airangel.com/hsmx-gateway/","tags":["x_refsource_MISC","x_transferred","Product"]},{"url":"http://etizazmohsin.com/hsmx.html#rce","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40521"},{"url":"https://github.com/advisories/GHSA-fw83-hp96-3f54"}],"sources":{"cve":[{"id":"CVE-2021-40521","description":"Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.","status":"published","published":"2021-11-10T15:55:23Z","modified":"2024-08-04T02:44:10.841Z","updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27697","description":"Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.","status":"published","published":"2021-11-10T15:55:23Z","modified":"2024-08-04T02:44:10Z","updated_at":"2026-11-03T03:24:20.264881Z"}],"ghsa":[{"id":"GHSA-fw83-hp96-3f54","title":"Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.","description":"Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.","status":"published","published":"2022-05-24T19:20:17Z","modified":"2023-01-30T05:03:51Z","updated_at":"2026-11-02T14:46:55.198962Z"}],"nvd":[{"id":"CVE-2021-40521","description":"Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.","status":"published","published":"2021-11-10T16:15:09.093Z","modified":"2026-06-17T04:07:04.917Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}