Critical severity · published May 2, 2019
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…
9.8
CVSS
22.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)22.5% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
5F
5200w-t Firmware · Billion
7.3.8.0 · source: NVD
PV
P660hn-t1a V1 Firmware · Zyxel
7.3.37.6 · source: NVD
PV
P660hn-t1a V2 Firmware · Zyxel
7.3.37.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18371
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18371
Broken Link
http://www.zyxel.com/support/announcement_unauthenticated.shtml
Exploit
https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt
Exploit
https://seclists.org/fulldisclosure/2017/Jan/40
Exploit
https://ssd-disclosure.com/index.php/archives/2910
Technical Description
https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/
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