CVE-2022-0734
5.8 · MEDIUMOverview
CVE-2022-0734 is a medium-severity vulnerability affecting zyxel vpn100_firmware. It was published on May 24, 2022 and has a CVSS 3.1 base score of 5.8 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from zyxel. Update vpn100_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| zyxel | vpn100_firmware | 4.35 | Affected |
| zyxel | vpn1000_firmware | 4.35 | Affected |
| zyxel | vpn300_firmware | 4.35 | Affected |
| zyxel | vpn50_firmware | 4.35 | Affected |
| zyxel | atp100_firmware | 4.35 | Affected |
| zyxel | atp100w_firmware | 4.35 | Affected |
| zyxel | atp200_firmware | 4.35 | Affected |
| zyxel | atp500_firmware | 4.35 | Affected |
| zyxel | atp700_firmware | 4.35 | Affected |
| zyxel | atp800_firmware | 4.35 | Affected |
Frequently Asked Questions
What is CVE-2022-0734?
CVE-2022-0734 is a medium-severity vulnerability affecting zyxel vpn100_firmware. It was published on May 24, 2022 and has a CVSS 3.1 base score of 5.8 (MEDIUM).
How severe is CVE-2022-0734?
This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2022-0734?
Check the references section for vendor advisories and patches from zyxel. Update vpn100_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2022-0734?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-0734 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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