High severity8.8NVD Advisory· Published May 2, 2019· Updated Jun 17, 2026
CVE-2017-18374
CVE-2017-18374
Description
The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has two user accounts with default passwords, including a hardcoded service account with the username true and password true. 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
5- ZyXEL/P660HN-T1A routerdescription
- Range: Fw $7.3.15.0 v001 / 3.40(ULM.0)b31
- cpe:2.3:o:billion:5200w-t_firmware:7.3.8.0:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:p660hn-t1a_v2_firmware:7.3.15.0:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:p660hn-t1a_v1_firmware:7.3.15.0:*:*:*:*:*:*:*
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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