Zyxel · P660HN-T1A Routers
CVE-2017-18368
Zyxel P660HN-T1A Routers Command Injection Vulnerability
What it is
The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user. The vulnerability is in the ViewLog.asp page and can be exploited through the remote_host parameter.
CISA: Zyxel P660HN-T1A routers contain a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user and exploited via the remote_host parameter of the ViewLog.asp page.
What to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: August 28, 2023
- Added to the CISA list
- August 7, 2023
- Published
- May 2, 2019
- Severity
- Critical 9.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 95% in the top 0.1% of all known vulnerabilities
- Weakness
- CWE-78
- More details
- NVD · CVE.org · CISA
All references (5)
- https://seclists.org/fulldisclosure/2017/Jan/40
- https://ssd-disclosure.com/index.php/archives/2910
- https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-system…
- https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt
- http://www.zyxel.com/support/announcement_unauthenticated.shtml
More exploited flaws from Zyxel
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Sep 21, 2026 | Stack-Based Buffer Overflow | GS1900 Series Switches | High 8.8 | 2.8% |
| Feb 11, 2025 | DSL CPE OS Command Injection | DSL CPE Devices | High 8.8 | 21% |
| Feb 11, 2025 | DSL CPE OS Command Injection | DSL CPE Devices | High 8.8 | 23% |
| Dec 3, 2024 | Path Traversal | Multiple Firewalls | High 7.5 | 2.9% |
| Sep 18, 2023 | Command Injection | EMG2926 Routers | High 8.8 | 33% |
| Jun 23, 2023 | Multiple NAS Devices Command Injection | Multiple Network-Attached Storage (NAS) Devices | Critical 9.8 | 82% |
| Jun 5, 2023 | Buffer Overflow | Multiple Firewalls | Critical 9.8 | 28% |
| Jun 5, 2023 | Buffer Overflow | Multiple Firewalls | Critical 9.8 | 29% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.