{"id":"CVE-2021-27220","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-27220","generatedAt":"2026-10-27T22:27:26.063Z","title":"By invoking the screenshot functionality with prepared context paths, an attacker is able to verify the existence of certain files on the filesystem of the PRTG's Web server.","description":"An issue was discovered in PRTG Network Monitor before 21.1.66.1623. By invoking the screenshot functionality with prepared context paths, an attacker is able to verify the existence of certain files on the filesystem of the PRTG's Web server.","published":"2021-03-31T22:15:14.000Z","lastModified":"2026-06-17T03:44:30.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":[],"affected":["paessler/prtg network monitor"],"epss":{"score":0.01828,"percentile":0.78699,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.83%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.paessler.com/prtg/history/stable#21.1.66.1623","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.paessler.com/prtg/history/stable#21.1.66.1623","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-27220","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."}