CVE-2023-33010

KEV
Published: Mag 24, 2023 Last Modified: Ott 27, 2025 EU-VD ID: EUVD-2023-37199 Aliases: GSD-2023-33010
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

A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on 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
0,0585
Percentile
0,9th
Updated

EPSS Score Trend (Last 90 Days)

120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Modify Memory Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu)
Applicable Platforms
Languages: Assembly, C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
Operating System

Usg 60 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 60 Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_60_firmware:4.73:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn50 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn50 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn50_firmware:5.36:patch1:*:*:*:*:*:*
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 4.25 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 20W-Vpn Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 20W-Vpn Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 100 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_100_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 60W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 60W Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_60w_firmware:4.73:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 50W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 50W Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 40W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 40W Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_40w_firmware:4.73:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 50W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 50W Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 200 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_200_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 40 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 40 Firmware
Version Range Affected
From 4.25 (inclusive)
To 4.73 (exclusive)
cpe:2.3:o:zyxel:usg_40_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp500 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp500 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp500_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 60 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 60 Firmware
Version Range Affected
From 4.25 (inclusive)
To 4.73 (exclusive)
cpe:2.3:o:zyxel:usg_60_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100W Firmware
Version 5.36
cpe:2.3:o:zyxel:atp100w_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn1000 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn1000 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn1000_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 500 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 500 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_500_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn100 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn100_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp200 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp200_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 60W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 60W Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_60w_firmware:4.73:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100W Firmware
Version 5.36
cpe:2.3:o:zyxel:atp100w_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 60W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 60W Firmware
Version Range Affected
From 4.25 (inclusive)
To 4.73 (exclusive)
cpe:2.3:o:zyxel:usg_60w_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 20W-Vpn Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 20W-Vpn Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn1000 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn1000 Firmware
Version Range Affected
From 4.30 (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 5.36
cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg20-Vpn Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg20-Vpn Firmware
Version Range Affected
From 4.30 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg20-vpn_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100 Firmware
Version Range Affected
From 4.32 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp700 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp700 Firmware
Version Range Affected
From 4.32 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp800 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp800 Firmware
Version Range Affected
From 4.32 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp200 Firmware
Version Range Affected
From 4.32 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 200 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_200_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 40W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 40W Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_40w_firmware:4.73:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp200 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp200_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 60 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 60 Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_60_firmware:4.73:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp500 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp500 Firmware
Version Range Affected
From 4.32 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg20-Vpn Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg20-Vpn Firmware
Version 5.36
cpe:2.3:o:zyxel:usg20-vpn_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 40 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 40 Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_40_firmware:4.73:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp500 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp500 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp500_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 700 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 700 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_700_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp700 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp700 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp700_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 700 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 700 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_700_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn50 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn50 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn50_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 100W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 100W Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn50 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn50 Firmware
Version Range Affected
From 4.30 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn300 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn300 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn300_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn100 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn100_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp100_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100W Firmware
Version Range Affected
From 4.32 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp800 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp800 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp800_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg20-Vpn Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg20-Vpn Firmware
Version 5.36
cpe:2.3:o:zyxel:usg20-vpn_firmware:5.36:-:*:*:*:*:*:*
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 4.50 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_500_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 5.36
cpe:2.3:o:zyxel:usg_flex_500_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp100 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp100_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn300 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn300 Firmware
Version Range Affected
From 4.30 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn1000 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn1000 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn1000_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 100 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_100_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn300 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn300 Firmware
Version 5.36
cpe:2.3:o:zyxel:vpn300_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp800 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp800 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp800_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 50 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 50 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_50_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 50 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 50 Firmware
Version 5.36
cpe:2.3:o:zyxel:usg_flex_50_firmware:5.36:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 40W Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 40W Firmware
Version Range Affected
From 4.25 (inclusive)
To 4.73 (exclusive)
cpe:2.3:o:zyxel:usg_40w_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Atp700 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Atp700 Firmware
Version 5.36
cpe:2.3:o:zyxel:atp700_firmware:5.36:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg Flex 200 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg Flex 200 Firmware
Version Range Affected
From 4.50 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Usg 40 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Usg 40 Firmware
Version 4.73
cpe:2.3:o:zyxel:usg_40_firmware:4.73:patch1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vpn100 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Vpn100 Firmware
Version Range Affected
From 4.30 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:vpn100_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 4.50 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_100_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 4.50 (inclusive)
To 5.36 (exclusive)
cpe:2.3:o:zyxel:usg_flex_700_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…
https://www.zyxel.com/global/en/support/security-advisories…
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advi…
https://www.zyxel.com/global/en/support/security-advisories…
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advi…