CVE-2023-28771

KEV
Published: Apr 25, 2023 Last Modified: Ott 27, 2025
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.

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
0,9435
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability Non-Repudiation
Potential Impacts:
Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Read Files Or Directories Modify Files Or Directories Read Application Data Modify Application Data Hide Activities
Applicable Platforms
Technologies: AI/ML, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
Operating System

Usg Flex 200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 200 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 700 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 700 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp700 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp700 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp500 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp500 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Zywall Usg 310 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Zywall Usg 310 Firmware
Version 4.73
cpe:2.3:o:zyxel:zywall_usg_310_firmware:4.73:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 50 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 50 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn100 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Zywall Usg 100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Zywall Usg 100 Firmware
Version 4.73
cpe:2.3:o:zyxel:zywall_usg_100_firmware:4.73:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn300 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn300 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 500 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 500 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp800 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp800 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Zywall Usg 100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Zywall Usg 100 Firmware
Version Range Affected
From 4.60 (inclusive)
To 4.73 (exclusive)
cpe:2.3:o:zyxel:zywall_usg_100_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn50 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn50 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp200 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100W Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.35 (exclusive)
cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 50W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 50W Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Zywall Usg 310 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Zywall Usg 310 Firmware
Version Range Affected
From 4.60 (inclusive)
To 4.73 (exclusive)
cpe:2.3:o:zyxel:zywall_usg_310_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 100 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn1000 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn1000 Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 100W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 100W Firmware
Version Range Affected
From 4.60 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
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-2023…
http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packe…
http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenti…
https://www.zyxel.com/global/en/support/security-advisories…
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advi…
http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packe…
http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenti…
https://www.zyxel.com/global/en/support/security-advisories…
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advi…