{"id":"CVE-2021-20025","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-20025","generatedAt":"2026-10-27T20:22:09.115Z","title":"An attacker could exploit this transitional/temporary user account from the trusted domain to access the Virtual Appliance remotely only when the device is freshly installed and not connected to Mysonicwall.","description":"SonicWall Email Security Virtual Appliance version 10.0.9 and earlier versions contain a default username and a password that is used at initial setup. An attacker could exploit this transitional/temporary user account from the trusted domain to access the Virtual Appliance remotely only when the device is freshly installed and not connected to Mysonicwall.","published":"2021-05-13T15:15:08.000Z","lastModified":"2026-06-17T03:33:10.000Z","status":"Modified","sourceIdentifier":"PSIRT@sonicwall.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-798"],"affected":["sonicwall/email security virtual appliance"],"epss":{"score":0.00356,"percentile":0.29044,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0012","tags":["Vendor Advisory"],"source":"PSIRT@sonicwall.com"},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0012","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-20025","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."}