Critical severity9.8NVD Advisory· Published May 2, 2019· Updated Jun 17, 2026
CVE-2017-18371
CVE-2017-18371
Description
The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has three user accounts with default passwords, including two hardcoded service accounts: one with the username true and password true, and another with the username supervisor and password zyad1234. These accounts can be used to login to the web interface, exploit authenticated command injections, and change router settings for malicious purposes.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4- Range: Fw #7.3.37.6
- cpe:2.3:o:billion:5200w-t_firmware:7.3.8.0:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:p660hn-t1a_v2_firmware:7.3.37.6:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:p660hn-t1a_v1_firmware:7.3.37.6:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
5- raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txtnvdExploitThird Party Advisory
- seclists.org/fulldisclosure/2017/Jan/40nvdExploitMailing ListThird Party Advisory
- ssd-disclosure.com/index.php/archives/2910nvdExploitTechnical DescriptionThird Party Advisory
- unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/nvdTechnical DescriptionThird Party Advisory
- www.zyxel.com/support/announcement_unauthenticated.shtmlnvdBroken Link
News mentions
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