{"cve":"CVE-2021-20022","nvd":{"published":"2021-04-09T18:15:13.460","modified":"2026-10-01T21:17:15.817","status":"Analyzed","description":"SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to upload an arbitrary file to the remote host.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":7.2},"cwes":["CWE-434"],"references":["https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0008","https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0008","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20022"],"products":["sonicwall:email_security","sonicwall:email_security_appliance_3300_firmware","sonicwall:email_security_appliance_4300_firmware","sonicwall:email_security_appliance_5000_firmware","sonicwall:email_security_appliance_5050_firmware","sonicwall:email_security_appliance_7000_firmware","sonicwall:email_security_appliance_7050_firmware","sonicwall:email_security_appliance_8300_firmware","sonicwall:email_security_appliance_9000_firmware","sonicwall:email_security_virtual_appliance","sonicwall:hosted_email_security"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-20022","score":0.16639,"percentile":0.96997,"date":"2026-10-25"},"kev":{"cve":"CVE-2021-20022","date_added":"2021-11-03","due_date":"2021-11-17","vendor":"SonicWall","product":"SonicWall Email Security","known_ransomware":true},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}