CVE-2023-6398
7.2 · HIGHOverview
CVE-2023-6398 is a high-severity vulnerability affecting zyxel atp100_firmware. It was published on February 20, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1,
USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1,
NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.
Remediation
Check the references section for vendor advisories and patches from zyxel. Update atp100_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 | atp100_firmware | >= 4.32, < 5.37 | Affected |
| zyxel | atp100w_firmware | >= 4.32, < 5.37 | Affected |
| zyxel | atp200_firmware | >= 4.32, < 5.37 | Affected |
| zyxel | atp500_firmware | >= 4.32, < 5.37 | Affected |
| zyxel | atp700_firmware | >= 4.32, < 5.37 | Affected |
| zyxel | atp800_firmware | >= 4.32, < 5.37 | Affected |
| zyxel | usg_flex_100_firmware | >= 4.50, < 5.37 | Affected |
| zyxel | usg_flex_100ax_firmware | >= 4.50, < 5.37 | Affected |
| zyxel | usg_flex_100h_firmware | >= 4.50, < 5.37 | Affected |
| zyxel | usg_flex_100w_firmware | >= 4.50, < 5.37 | Affected |
Frequently Asked Questions
What is CVE-2023-6398?
CVE-2023-6398 is a high-severity vulnerability affecting zyxel atp100_firmware. It was published on February 20, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2023-6398?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-6398?
Check the references section for vendor advisories and patches from zyxel. Update atp100_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-2023-6398?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-6398 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.
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Browser-based exploitation validates findings with real proof-of-concept.
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