{"id":"CVE-2021-43936","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-43936","generatedAt":"2026-11-05T00:59:08.097Z","title":"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.","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.","published":"2021-12-06T18:15:08.000Z","lastModified":"2026-06-17T04:11:40.000Z","status":"Modified","sourceIdentifier":"ics-cert@hq.dhs.gov","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-434"],"affected":["webhmi/webhmi firmware"],"epss":{"score":0.35804,"percentile":0.98468,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2021-12-13","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":50589,"kind":"exploit","title":"WebHMI 4.0 - Remote Code Execution (RCE) (Authenticated)","url":"https://www.exploit-db.com/exploits/50589","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/50589.py","file":"exploits/php/webapps/50589.py","published":"2021-12-13","added":"2021-12-13","updated":"2021-12-13","author":"Jeremiasz Pluta","type":"webapps","platform":"php","port":null,"verified":false,"codes":["CVE-2021-43936"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 35.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"ics-cert@hq.dhs.gov"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03","tags":["Patch","Third Party Advisory","US Government Resource"],"source":"ics-cert@hq.dhs.gov"},{"url":"http://packetstormsecurity.com/files/165252/WebHMI-4.0-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03","tags":["Patch","Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-43936","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}