CVE-2019-12581
6.1 · MEDIUMOverview
CVE-2019-12581 is a medium-severity vulnerability affecting zyxel uag2100_firmware. It was published on June 27, 2019 and has a CVSS 3.0 base score of 6.1 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A reflective Cross-site scripting (XSS) vulnerability in the free_time_failed.cgi CGI program in selected Zyxel ZyWall, USG, and UAG devices allows remote attackers to inject arbitrary web script or HTML via the err_msg parameter.
Remediation
Check the references section for vendor advisories and patches from zyxel. Update uag2100_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 | uag2100_firmware | 0 | Affected |
| zyxel | uag4100_firmware | 0 | Affected |
| zyxel | uag5100_firmware | 0 | Affected |
| zyxel | usg110_firmware | 0 | Affected |
| zyxel | usg210_firmware | 0 | Affected |
| zyxel | usg310_firmware | 0 | Affected |
| zyxel | usg1100_firmware | 0 | Affected |
| zyxel | usg1900_firmware | 0 | Affected |
| zyxel | usg2200-vpn_firmware | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2019-12581?
CVE-2019-12581 is a medium-severity vulnerability affecting zyxel uag2100_firmware. It was published on June 27, 2019 and has a CVSS 3.0 base score of 6.1 (MEDIUM).
How severe is CVE-2019-12581?
This vulnerability has a CVSS 3.0 base score of 6.1, 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-2019-12581?
Check the references section for vendor advisories and patches from zyxel. Update uag2100_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-2019-12581?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-12581 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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