Vulnerability Monitor

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CVE-2022-40603

A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.7, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, for affected systems. Impacting 38 products from zyxel, from zyxel, from zyxel and 35 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

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.

Published

2022-12-06T02:15:09.730

Last Modified

2024-11-21T07:21:42.180

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-79
  • Type: Primary
    CWE-79
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System zyxel atp800_firmware ≤ 5.31 Yes
Hardware zyxel atp800 - No
Operating System zyxel atp700_firmware ≤ 5.31 Yes
Hardware zyxel atp700 - No
Operating System zyxel atp500_firmware ≤ 5.31 Yes
Hardware zyxel atp500 - No
Operating System zyxel atp200_firmware ≤ 5.31 Yes
Hardware zyxel atp200 - No
Operating System zyxel atp100_firmware ≤ 5.31 Yes
Hardware zyxel atp100 - No
Operating System zyxel atp100w_firmware ≤ 5.31 Yes
Hardware zyxel atp100w - No
Operating System zyxel usg_flex_100w_firmware ≤ 5.31 Yes
Hardware zyxel usg_flex_100w - No
Operating System zyxel usg_flex_200_firmware ≤ 5.31 Yes
Hardware zyxel usg_flex_200 - No
Operating System zyxel usg_flex_500_firmware ≤ 5.31 Yes
Hardware zyxel usg_flex_500 - No
Operating System zyxel usg_flex_700_firmware ≤ 5.31 Yes
Hardware zyxel usg_flex_700 - No
Operating System zyxel usg_flex_50w_firmware ≤ 5.31 Yes
Hardware zyxel usg_flex_50w - No
Operating System zyxel vpn1000_firmware ≤ 5.31 Yes
Hardware zyxel vpn1000 - No
Operating System zyxel vpn300_firmware ≤ 5.31 Yes
Hardware zyxel vpn300 - No
Operating System zyxel vpn100_firmware ≤ 5.31 Yes
Hardware zyxel vpn100 - No
Operating System zyxel vpn50_firmware ≤ 5.31 Yes
Hardware zyxel vpn50 - 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
References

How SecUtils Interprets This CVE

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.