CVE-2019-12581

medium

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.

References

https://www.zyxel.com/us/en/

https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml

https://sec-consult.com/en/blog/advisories/reflected-cross-site-scripting-in-zxel-zywall/index.html

https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/

Details

Source: Mitre, NVD

Published: 2019-06-27

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N