Vulnerability in Billion 5200w-T
CVE-2017-18371
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.225 (97.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.225 · newest: 0.225 · change: 0.000
Affected products
- Billion 5200w-T
- Billion 5200w-T Firmware — versions 7.3.8.0
- Zyxel P660hn-T1a V1
- Zyxel P660hn-T1a V1 Firmware — versions 7.3.37.6
- Zyxel P660hn-T1a V2
- Zyxel P660hn-T1a V2 Firmware — versions 7.3.37.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- seclists.org/fulldisclosure/2017/Jan/40 (Exploit, Mailing List, Third Party Advisory)
- ssd-disclosure.com/index.php/archives/2910 (Technical Description, Exploit, Third Party Advisory)
- unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-prese… (Technical Description, Third Party Advisory)
- raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt (Exploit, Third Party Advisory)
- www.zyxel.com/support/announcement_unauthenticated.shtml (Broken Link)
Frequently asked questions
- What is CVE-2017-18371?
- CVE-2017-18371 is a critical-severity vulnerability in Billion 5200w-T, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2019-05-02.
- How severe is CVE-2017-18371?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-18371 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.