MEDIUMCVSS 4.9Actively exploited · CISA KEV since 2021-11-03Vulnerability
CVE-2021-20023
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.
Properties
- Euvd product
- Email Security
- Vulnerability name
- SonicWall Email Security Path Traversal Vulnerability
- First seen
- 2026-10-01T20:20:16+00:00
- Cvss score
- 4.9
- Epss score
- 0.51689
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2021-11-17
- Euvd assigner
- sonicwall
- Retrieved at
- 2026-10-21T01:24:47+00:00
- Exploited euvd since
- 2021-11-03T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2021-11-03
- Euvd base score version
- 3.1
- Score
- 4.9
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- SonicWall
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 4.9
Related Entities (23)
AFFECTS_PRODUCT (20)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
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