KEV Entry

CVE-2021-20023

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-20023

2021-11-03 01:00 CET

Timestamps

2021-11-03

2021-11-03

Scope

SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to read an arbitrary file on the... | Affected: SonicWall / Email Security | CVSS: 4.9 (MEDIUM) | EPSS: 0.51407 | Used in malware: yes | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-20023', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-20023'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-20023'}

29482989-cdf4-4a11-99f5-e4c4539ad186

Previdian
caeb2787-0d58-4236-9039-7c86c3e566f3

2026-10-02 09:10 CEST

2026-10-02 09:10 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian confirmed_compromise 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2021-20023",
  "cvss_estimated": false,
  "cvss_score": 4.9,
  "cvss_severity": "MEDIUM",
  "epss_percentile": 0.9891,
  "epss_score": 0.51407,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "Email Security",
  "title": "SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to read an arbitrary file on the...",
  "used_in_malware": "yes",
  "vendor": "SonicWall",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-20023"
}
 -
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