{"cve_id":"CVE-2021-20023","published":"2021-04-20T12:15:12.587000+00:00","last_modified":"2026-10-01T21:17:16.097000+00:00","vuln_status":"Analyzed","description":"SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to read an arbitrary file on the remote host.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","base_score":4.9,"base_severity":"MEDIUM","attack_vector":"NETWORK","privileges_req":"HIGH","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"NONE","impact_a":"NONE","cwe_ids":["CWE-22"],"in_kev":true,"kev_date_added":"2021-11-03","kev_ransomware":true,"epss_score":0.51689,"epss_percentile":0.98947,"cap_rule_version":"0.1.1","stage":"RECON","req_access":"PRIV","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"PRIV","caps":["INFO_DISCLOSURE"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-02T03:16:12.714654+00:00","first_seen":"2021-04-20T12:15:12.587000+00:00","kev_first_seen":"2021-11-03T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["microsoft","sonicwall"],"products":["email_security","email_security_appliance_3300","email_security_appliance_3300_firmware","email_security_appliance_4300","email_security_appliance_4300_firmware","email_security_appliance_5000","email_security_appliance_5000_firmware","email_security_appliance_5050","email_security_appliance_5050_firmware","email_security_appliance_7000","email_security_appliance_7000_firmware","email_security_appliance_7050","email_security_appliance_7050_firmware","email_security_appliance_8300","email_security_appliance_8300_firmware","email_security_appliance_9000","email_security_appliance_9000_firmware","email_security_virtual_appliance","hosted_email_security","windows"],"affected":[{"vendor":"sonicwall","product":"email_security","ranges":["< 10.0.9.6173"]},{"vendor":"sonicwall","product":"email_security_appliance_3300_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_appliance_4300_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_appliance_5000_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_appliance_5050_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_appliance_7000_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_appliance_7050_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_appliance_8300_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_appliance_9000_firmware","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"email_security_virtual_appliance","ranges":["< 10.0.9.6177"]},{"vendor":"sonicwall","product":"hosted_email_security","ranges":["< 10.0.9.6173"]}]}