{"id":"CVE-2021-43936","aliases":["EUVD-2021-30798","GHSA-9558-55mx-wf4p"],"status":"published","title":"Distributed Data Systems WebHM","description":"The software allows the attacker to upload or transfer files of dangerous types to the WebHMI portal, that may be automatically processed within the product's environment or lead to arbitrary code execution.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.35804,"percentile":0.9848,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-434"],"published":"2021-12-06T17:39:24Z","modified":"2026-06-17T04:11:39Z","exploits":[{"source":"exploitdb","id":"EDB-50589","title":"WebHMI 4.0 - Remote Code Execution (RCE) (Authenticated)","type":"webapps","platform":"php","date":"2021-12-13","url":"https://www.exploit-db.com/exploits/50589"},{"source":"pocgithub","id":"LongWayHomie/CVE-2021-43936","title":"LongWayHomie/CVE-2021-43936","date":"2021-12-12","url":"https://github.com/LongWayHomie/CVE-2021-43936"}],"products":[{"vendor":"distributed data systems","product":"webhmi"},{"vendor":"webhmi","product":"webhmi_firmware"}],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","US Government Resource"]},{"url":"http://packetstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43936"},{"url":"https://github.com/advisories/GHSA-9558-55mx-wf4p"}],"sources":{"cve":[{"id":"CVE-2021-43936","title":"Distributed Data Systems WebHM","description":"The software allows the attacker to upload or transfer files of dangerous types to the WebHMI portal, that may be automatically processed within the product's environment or lead to arbitrary code execution.","status":"published","published":"2021-12-06T17:39:24Z","modified":"2024-08-04T04:10:16.987Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30798","description":"The software allows the attacker to upload or transfer files of dangerous types to the WebHMI portal, that may be automatically processed within the product's environment or lead to arbitrary code execution.","status":"published","published":"2021-12-06T17:39:24Z","modified":"2024-08-04T04:10:16Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T03:24:13.193734Z"}],"ghsa":[{"id":"GHSA-9558-55mx-wf4p","title":"The software allows the attacker to upload or transfer files of dangerous types to the WebHMI...","description":"The software allows the attacker to upload or transfer files of dangerous types to the WebHMI portal, that may be automatically processed within the product's environment or lead to arbitrary code execution.","status":"published","published":"2021-12-07T00:00:28Z","modified":"2023-02-01T05:06:56Z","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"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:50:26.86128Z"}],"nvd":[{"id":"CVE-2021-43936","description":"The software allows the attacker to upload or transfer files of dangerous types to the WebHMI portal, that may be automatically processed within the product's environment or lead to arbitrary code execution.","status":"published","published":"2021-12-06T18:15:08.353Z","modified":"2026-06-17T04:11:39.51Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"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"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}