{"id":"CVE-2021-20034","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-20034","generatedAt":"2026-11-05T01:03:21.009Z","title":"An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.","description":"An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.","published":"2021-09-27T18:15:08.000Z","lastModified":"2026-06-17T03:33:11.000Z","status":"Modified","sourceIdentifier":"PSIRT@sonicwall.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-284","CWE-22"],"affected":["sonicwall/sma 200 firmware","sonicwall/sma 210 firmware","sonicwall/sma 400 firmware","sonicwall/sma 410 firmware","sonicwall/sma 500v"],"epss":{"score":0.81831,"percentile":0.99648,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2021-10-20","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":50430,"kind":"exploit","title":"SonicWall SMA 10.2.1.0-17sv - Password Reset","url":"https://www.exploit-db.com/exploits/50430","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/hardware/webapps/50430.txt","file":"exploits/hardware/webapps/50430.txt","published":"2021-10-20","added":"2021-10-20","updated":"2021-10-20","author":"Jacob Baines","type":"webapps","platform":"hardware","port":null,"verified":false,"codes":["CVE-2021-20034"],"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 81.8%, higher than 100% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"PSIRT@sonicwall.com"},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021","tags":["Vendor Advisory"],"source":"PSIRT@sonicwall.com"},{"url":"http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-20034","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."}