A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.11 through 4.72, that could allow an authenticated attacker to access some restricted files on a vulnerable device.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 50 products from zyxel, from zyxel, from zyxel and 47 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2022, 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.
2022-07-19T06:15:08.383
2024-11-21T07:00:12.173
Modified
CVSSv3.1: 6.5 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | zyxel | usg_flex_100w_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg_flex_100w | - | No |
| Operating System | zyxel | usg_flex_200_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg_flex_200 | - | No |
| Operating System | zyxel | usg_flex_500_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg_flex_500 | - | No |
| Operating System | zyxel | usg_flex_700_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg_flex_700 | - | No |
| Operating System | zyxel | usg_flex_50w_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg_flex_50w | - | No |
| Operating System | zyxel | usg20w-vpn_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg20w-vpn | - | No |
| Operating System | zyxel | atp800_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | atp800 | - | No |
| Operating System | zyxel | atp700_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | atp700 | - | No |
| Operating System | zyxel | atp500_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | atp500 | - | No |
| Operating System | zyxel | atp200_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | atp200 | - | No |
| Operating System | zyxel | atp100w_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | atp100w | - | No |
| Operating System | zyxel | atp100_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | atp100 | - | No |
| Operating System | zyxel | vpn1000_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | vpn1000 | - | No |
| Operating System | zyxel | vpn300_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | vpn300 | - | No |
| Operating System | zyxel | vpn100_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | vpn100 | - | No |
| Operating System | zyxel | vpn50_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | vpn50 | - | No |
| Operating System | zyxel | usg20-vpn_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg20-vpn | - | No |
| Operating System | zyxel | usg_2200-vpn_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | usg_2200-vpn | - | No |
| Operating System | zyxel | zywall_110_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | zywall_110 | - | No |
| Operating System | zyxel | zywall_310_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | zywall_310 | - | No |
| Operating System | zyxel | zywall_1100_firmware | ≤ 5.30 | Yes |
| Hardware | zyxel | zywall_1100 | - | No |
| Operating System | zyxel | usg40_firmware | ≤ 4.72 | Yes |
| Hardware | zyxel | usg40 | - | No |
| Operating System | zyxel | usg40w_firmware | ≤ 4.72 | Yes |
| Hardware | zyxel | usg40w | - | No |
| Operating System | zyxel | usg60_firmware | ≤ 4.72 | Yes |
| Hardware | zyxel | usg60 | - | No |
| Operating System | zyxel | usg60w_firmware | ≤ 4.72 | Yes |
| Hardware | zyxel | usg60w | - | 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.