CVE-2019-12581

Public Exploit

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 62.86% Top 5%
Vendor Advisory zyxel.com Vendor Advisory zyxel.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.zyxel.com/us/en/ vendor advisory
https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml patch vendor advisory
https://sec-consult.com/en/blog/advisories/reflected-cross-site-scripting-in-zxel-zywall/index.html exploit third party advisory patch
https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-12581?
CVE-2019-12581 has been scored as a medium severity vulnerability.
How to fix CVE-2019-12581?
To fix CVE-2019-12581, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-12581 being actively exploited in the wild?
It is possible that CVE-2019-12581 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~63% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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