The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36, USG FLEX 50(W) series firmware versions 5.10 through 5.36, USG20(W)-VPN series firmware versions 5.10 through 5.36, and VPN series firmware versions 5.00 through 5.36. An unauthenticated, LAN-based attacker could leverage the vulnerability to inject some operating system (OS) commands into the device configuration data on an affected device when the cloud management mode is enabled.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 44 products from zyxel, from zyxel, from zyxel and 41 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2023, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2023-07-17T17:15:09.883
2024-11-21T07:55:58.100
Modified
CVSSv3.1: 8.8 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | zyxel | usg_2200-vpn_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_2200-vpn | - | No |
| Operating System | zyxel | usg_flex_100_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_flex_100 | - | No |
| Operating System | zyxel | usg_flex_100w_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_flex_100w | - | No |
| Operating System | zyxel | usg_flex_200_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_flex_200 | - | No |
| Operating System | zyxel | usg_flex_50_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_flex_50 | - | No |
| Operating System | zyxel | usg_flex_500_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_flex_500 | - | No |
| Operating System | zyxel | usg_flex_50w_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_flex_50w | - | No |
| Operating System | zyxel | usg_flex_700_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_flex_700 | - | No |
| Operating System | zyxel | zywall_vpn100_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_vpn100 | - | No |
| Operating System | zyxel | zywall_vpn2s_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_vpn2s | - | No |
| Operating System | zyxel | zywall_vpn300_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_vpn300 | - | No |
| Operating System | zyxel | zywall_vpn50_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_vpn50 | - | No |
| Operating System | zyxel | zywall_vpn_100_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_vpn_100 | - | No |
| Operating System | zyxel | zywall_vpn_300_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_vpn_300 | - | No |
| Operating System | zyxel | zywall_vpn_50_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_vpn_50 | - | No |
| Operating System | zyxel | usg_20w-vpn_firmware | < 5.37 | Yes |
| Hardware | zyxel | usg_20w-vpn | - | No |
| Operating System | zyxel | zywall_atp100_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_atp100 | - | No |
| Operating System | zyxel | zywall_atp100w_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_atp100w | - | No |
| Operating System | zyxel | zywall_atp200_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_atp200 | - | No |
| Operating System | zyxel | zywall_atp500_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_atp500 | - | No |
| Operating System | zyxel | zywall_atp700_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_atp700 | - | No |
| Operating System | zyxel | zywall_atp800_firmware | < 5.37 | Yes |
| Hardware | zyxel | zywall_atp800 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For zyxel's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.