{"id":"CVE-2020-13166","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-13166","generatedAt":"2026-11-05T02:12:45.573Z","title":"The management tool in MyLittleAdmin 3.8 allows remote attackers to execute arbitrary code because machineKey is hardcoded (the same for all customers' installations) in web.config, and can be used to send serialized ASP code.","description":"The management tool in MyLittleAdmin 3.8 allows remote attackers to execute arbitrary code because machineKey is hardcoded (the same for all customers' installations) in web.config, and can be used to send serialized ASP code.","published":"2020-05-19T20:15:10.000Z","lastModified":"2026-06-17T02:52:44.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","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-798"],"affected":["mylittletools/mylittleadmin"],"epss":{"score":0.77635,"percentile":0.99563,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2020-05-25","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":48513,"kind":"exploit","title":"Plesk/myLittleAdmin - ViewState .NET Deserialization (Metasploit)","url":"https://www.exploit-db.com/exploits/48513","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/remote/48513.rb","file":"exploits/windows/remote/48513.rb","published":"2020-05-25","added":"2020-05-25","updated":"2020-05-25","author":"Metasploit","type":"remote","platform":"windows","port":null,"verified":true,"codes":["CVE-2020-13166"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/plesk_mylittleadmin_viewstate.rb"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 77.6%, higher than 100% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/157808/Plesk-myLittleAdmin-ViewState-.NET-Deserialization.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://ssd-disclosure.com/ssd-advisory-mylittleadmin-preauth-rce/","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/157808/Plesk-myLittleAdmin-ViewState-.NET-Deserialization.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ssd-disclosure.com/ssd-advisory-mylittleadmin-preauth-rce/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-13166","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."}