CVE-2019-12581

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.

CVSS v3.0 NVD

6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2.0 NVD

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS

6.40% chance of exploitation in the next 30 days, 94th percentile

Nuclei

medium · CWE-79

Published

2019-06-27

Updated

2024-08-04

Proof-of-concept exploits (1)

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

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-12581.yaml

Security advisories

• https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml
• https://www.zyxel.com/us/en
• https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss
• https://sec-consult.com/en/blog/advisories/reflected-cross-site-scripting-in-zxel-zywall/…

References

• CVE Record
• NVD entry