{"schema_version":"1","data":[{"id":3717,"advisory_id":"89b12467-15a6-4fc9-a6f5-2b866568ca00","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-20023","source_published_at":"2021-11-03T00:00:00+00:00","published_at":"2026-10-24T21:39:58.636957+00:00","extraction_method":"structured","technologies":["core-kev","sonicwall-email-security"],"cve_ids":["CVE-2021-20023"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"SonicWall Email Security Path Traversal Vulnerability","summary":"SonicWall Email Security contains a path traversal vulnerability that allows a post-authenticated attacker to read files on the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20022 to achieve privilege escalation. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2021-20023","products":[{"name":{"value":"SonicWall Email Security","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2021-20023","aliases":["CVE-2021-20023"],"affected":[],"modified":"2021-11-03T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-22"],"cveID":"CVE-2021-20023","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-20023","dueDate":"2021-11-17","product":"SonicWall Email Security","dateAdded":"2021-11-03","vendorProject":"SonicWall","requiredAction":"Apply updates per vendor instructions.","known_exploited":true,"shortDescription":"SonicWall Email Security contains a path traversal vulnerability that allows a post-authenticated attacker to read files on the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20022 to achieve privilege escalation.","vulnerabilityName":"SonicWall Email Security Path Traversal Vulnerability","knownRansomwareCampaignUse":"Known"}},"related_cves":[{"value":"CVE-2021-20023","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null}}],"next_after":3717,"next_before":3717}