{"id":"CVE-2021-26102","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-26102","generatedAt":"2026-10-27T22:26:47.859Z","title":"A relative path traversal vulnerability (CWE-23) in FortiWAN version 4.5.7 and below, 4.4 all versions may allow a remote non-authenticated attacker to delete files on the system by sending a crafted POST request.","description":"A relative path traversal vulnerability (CWE-23) in FortiWAN version 4.5.7 and below, 4.4 all versions may allow a remote non-authenticated attacker to delete files on the system by sending a crafted POST request. In particular, deleting specific configuration files will reset the Admin password to its default value.","published":"2024-12-19T14:15:05.000Z","lastModified":"2026-06-17T03:42:52.000Z","status":"Analyzed","sourceIdentifier":"psirt@fortinet.com","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"},"cwe":["CWE-305","CWE-22"],"affected":["fortinet/fortiwan"],"epss":{"score":0.19728,"percentile":0.97381,"date":"2026-10-26","history":[{"date":"2026-09-25","score":0.19728,"percentile":0.97312}]},"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 19.7%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://fortiguard.fortinet.com/psirt/FG-IR-21-048","tags":["Vendor Advisory"],"source":"psirt@fortinet.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-26102","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."}