CVE-2021-20023

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2021-20023

Confirmed

Yes

2021-11-03 00:00 UTC

Timestamps

2021-11-03

2021-11-03

Scope

KEV entry: SonicWall Email Security Path Traversal Vulnerability | Affected: SonicWall / SonicWall Email Security | Description: 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. | Required action: Apply updates per vendor instructions. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-20023

References
  • {'id': 'CVE-2021-20023', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-20023'}

0aa85098-fe7e-421c-b01d-339de248e3f8

405284c2-e461-4670-8979-7fd2c9755a60

2026-02-02 12:29 UTC

2026-02-02 12:29 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-22"
  ],
  "date_added": "2021-11-03",
  "due_date": "2021-11-17",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Known",
  "product": "SonicWall Email Security",
  "vendorProject": "SonicWall",
  "vulnerabilityName": "SonicWall Email Security Path Traversal Vulnerability"
}
 -
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