CVE-2019-12583

Missing Access Control in the "Free Time" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.

CVSS v3.0 NVD

9.1 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS v2.0 NVD

6.4 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:P

EPSS

43.93% chance of exploitation in the next 30 days, 99th percentile

Nuclei

critical · CWE-425

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-2019-12583.yaml

Security advisories

• https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml
• https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss

References

• CVE Record
• NVD entry