CVE-2021-20023

KEV
Published: Apr 20, 2021 Last Modified: Nov 12, 2025
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 4,9
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: high
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none
MEDIUM 4,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: single
Confidentiality: partial
Integrity: none
Availability: none

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,4776
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

22

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

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Execute Unauthorized Code Or Commands Modify Files Or Directories Read Files Or Directories Dos: Crash, Exit, Or Restart
Applicable Platforms
Technologies: AI/ML
Likelihood of Exploit: High
View CWE Details
Operating System

Email Security Appliance 9000 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 9000 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_9000_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Email Security Virtual Appliance by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Virtual Appliance
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:a:sonicwall:email_security_virtual_appliance:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Email Security Appliance 3300 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 3300 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_3300_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Email Security Appliance 8300 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 8300 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_8300_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Email Security by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security
Version Range Affected
To 10.0.9.6173 (exclusive)
cpe:2.3:a:sonicwall:email_security:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Email Security Appliance 4300 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 4300 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_4300_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Email Security Appliance 5000 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 5000 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_5000_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Email Security Appliance 7000 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 7000 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_7000_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Email Security Appliance 5050 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 5050 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_5050_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Email Security Appliance 7050 Firmware by Sonicwall

Product Information
Vendor Sonicwall
Product Email Security Appliance 7050 Firmware
Version Range Affected
To 10.0.9.6177 (exclusive)
cpe:2.3:o:sonicwall:email_security_appliance_7050_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Hosted Email Security by Sonicwall

Product Information
Vendor Sonicwall
Product Hosted Email Security
Version Range Affected
To 10.0.9.6173 (exclusive)
cpe:2.3:a:sonicwall:hosted_email_security:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-…
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0010
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-…
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0010