A cross-site scripting vulnerability was identified in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.35 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.35 through 5.20, and VPN series firmware versions 4.35 through 5.20, that could allow an attacker to obtain some information stored in the user's browser, such as cookies or session tokens, via a malicious script.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, for affected systems. Impacting 64 products from zyxel, from zyxel, from zyxel and 61 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.
2022-05-24T03:15:09.093
2024-11-21T06:39:17.163
Modified
CVSSv3.1: 5.8 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | zyxel | vpn100_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | vpn100 | - | No |
| Operating System | zyxel | vpn1000_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | vpn1000 | - | No |
| Operating System | zyxel | vpn300_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | vpn300 | - | No |
| Operating System | zyxel | vpn50_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | vpn50 | - | No |
| Operating System | zyxel | atp100_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | atp100 | - | No |
| Operating System | zyxel | atp100w_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | atp100w | - | No |
| Operating System | zyxel | atp200_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | atp200 | - | No |
| Operating System | zyxel | atp500_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | atp500 | - | No |
| Operating System | zyxel | atp700_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | atp700 | - | No |
| Operating System | zyxel | atp800_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | atp800 | - | No |
| Operating System | zyxel | usg_110_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_110 | - | No |
| Operating System | zyxel | usg_1100_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_1100 | - | No |
| Operating System | zyxel | usg_1900_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_1900 | - | No |
| Operating System | zyxel | usg_20w_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_20w | - | No |
| Operating System | zyxel | usg_20w-vpn_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_20w-vpn | - | No |
| Operating System | zyxel | usg_2200-vpn_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_2200-vpn | - | No |
| Operating System | zyxel | usg_310_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_310 | - | No |
| Operating System | zyxel | usg_40_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_40 | - | No |
| Operating System | zyxel | usg_40w_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_40w | - | No |
| Operating System | zyxel | usg_60_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_60 | - | No |
| Operating System | zyxel | usg_60w_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg_60w | - | No |
| Operating System | zyxel | usg_flex_100_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | usg_flex_100 | - | No |
| Operating System | zyxel | usg_flex_100w_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | usg_flex_100w | - | No |
| Operating System | zyxel | usg_flex_200_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | usg_flex_200 | - | No |
| Operating System | zyxel | usg_flex_500_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | usg_flex_500 | - | No |
| Operating System | zyxel | usg_flex_700_firmware | ≤ 5.20 | Yes |
| Hardware | zyxel | usg_flex_700 | - | No |
| Operating System | zyxel | usg200_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg200 | - | No |
| Operating System | zyxel | usg20_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg20 | - | No |
| Operating System | zyxel | usg210_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg210 | - | No |
| Operating System | zyxel | usg2200_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg2200 | - | No |
| Operating System | zyxel | usg300_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg300 | - | No |
| Operating System | zyxel | usg310_firmware | ≤ 4.70 | Yes |
| Hardware | zyxel | usg310 | - | 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.