Vulnerability Report

CVE-2021-20023

CISA KEV Active

Title: Sonicwall Email Security Appliance 5000 Path Traversal / LFI

Path Traversal / LFI

Proof Of Concept

No public PoC currently indexed for CVE-2021-20023.

CWE Category CWE-22
Published Date Apr 20, 2021
Modified Date Nov 12, 2025
Exploit Status Not Found
Score 4.9 CVSS v3.1
Exploit Probability (EPSS)
51.41%

Vulnerability Summary

CVE-2021-20023: 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.

Impacted Vendors

C
cisco 1
S
sonicwall 11
W
websense 1

Reference Links

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0010 https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0010 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20023
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.9
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity MEDIUM
4.9
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:S/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-20023 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.