What’s Vulnerable › Vulnerabilities
CVE-2017-18373
- Severity: high (CVSS 8.8 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 5.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2019-05-02 · updated 2026-06-17
- Weakness: CWE-798
Description
The Billion 5200W-T TCLinux Fw $7.3.8.0 v008 130603 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 user3 and and a long password consisting of a repetition of the string 0123456789. These accounts can be used to login to the web interface, exploit authenticated command injections, and change router settings for malicious purposes.
Affected products
- Billion 5200W-T Firmware: 7.3.8.0
References
- https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt
- https://seclists.org/fulldisclosure/2017/Jan/40
- https://ssd-disclosure.com/index.php/archives/2910
- https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt
- https://seclists.org/fulldisclosure/2017/Jan/40
- https://ssd-disclosure.com/index.php/archives/2910
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