{"id":"CVE-2020-12255","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-12255","generatedAt":"2026-11-05T02:08:53.004Z","title":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header.","description":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.","published":"2020-05-18T15:15:11.000Z","lastModified":"2026-06-17T02:51:31.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-434"],"affected":["rconfig/rconfig"],"epss":{"score":0.58085,"percentile":0.99091,"date":"2026-11-03","history":[{"date":"2026-10-25","score":0.57813,"percentile":0.9908}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 58.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-10-25T00:00:00.000Z","detail":{"to":0.57813,"from":0.52582,"percentile":0.9908},"summary":"EPSS moved from 52.6% to 57.8% probability of exploitation in the next thirty days."}],"references":[{"url":"https://gist.github.com/farid007/9f6ad063645d5b1550298c8b9ae953ff","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://gist.github.com/farid007/9f6ad063645d5b1550298c8b9ae953ff","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-12255","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."}