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TI-2017-13544 Aliases CVE-2017-18371GHSA-j9rw-cgp6-m49q

The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has three…

Priority MEDIUM 62CWE-798Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-798.

Summary

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.

Why it matters now

EPSS 0.22531 97th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:billion:5200w-t_firmware:7.3.8.0:*:*:*:*:*:*:*7.3.8.0VulnerableBillion
cpe:2.3:h:billion:5200w-t:-:*:*:*:*:*:*:*not specified by NVDRunning onBillion
cpe:2.3:o:zyxel:p660hn-t1a_v2_firmware:7.3.37.6:*:*:*:*:*:*:*7.3.37.6VulnerableZyxel
cpe:2.3:h:zyxel:p660hn-t1a_v2:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:p660hn-t1a_v1_firmware:7.3.37.6:*:*:*:*:*:*:*7.3.37.6VulnerableZyxel
cpe:2.3:h:zyxel:p660hn-t1a_v1:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
  • cpe:2.3:o:billion:5200w-t_firmware:7.3.8.0:*:*:*:*:*:*:* Versions 7.3.8.0 Vulnerable ·Billion
  • cpe:2.3:h:billion:5200w-t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Billion
  • cpe:2.3:o:zyxel:p660hn-t1a_v2_firmware:7.3.37.6:*:*:*:*:*:*:* Versions 7.3.37.6 Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:p660hn-t1a_v2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:p660hn-t1a_v1_firmware:7.3.37.6:*:*:*:*:*:*:* Versions 7.3.37.6 Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:p660hn-t1a_v1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-18371
  2. 2026-10-03 Alias added: GHSA-j9rw-cgp6-m49q

References

Exploit 3

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences