CVE-2021-20023 | BDVDB-2026-152304 Detail

SonicWallEmail Security

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References#

Exploit#

No public exploit known

History#

Version 12021-04-20Record published in the CVE List.
Version 22026-10-01Most recent update recorded in the CVE List.

Published

Published: 2021-04-20
Last modified: 2026-10-01

Vendor information

Vendor: SonicWall
Product: Email Security

All SonicWall vulnerabilities

Score

4.9 Medium

EPSS

51.6%, High

Estimated chance of exploitation in the next 30 days. EPSS percentile: 99.0.

KEV

Yes

Listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Path Traversal

Action

Apply updates per vendor instructions.

Affected Systems

Vulnerable
10.0.9 and earlier
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

4.9 Medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	High
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).