# CVE-2017-18368: Zyxel P660HN-T1A Routers Command Injection Vulnerability

> CVE-2017-18368: Zyxel P660HN-T1A Routers Command Injection Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2017-18368
Last updated: 2025-10-21T23:45:37Z

- Published: 2019-05-02 16:14 UTC · Updated: 2025-10-21 23:45 UTC · Assigner: mitre
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 94.5%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-08-07, federal due date 2023-08-28, ransomware use: Unknown

## Description

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 required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- Zyxel: P660HN-T1A Routers

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2017-18368)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2017-18368)
- [https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel\_trueonline.txt](https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt)
- [https://seclists.org/fulldisclosure/2017/Jan/40](https://seclists.org/fulldisclosure/2017/Jan/40)
- [https://ssd-disclosure.com/index.php/archives/2910](https://ssd-disclosure.com/index.php/archives/2910)
- [https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/](https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/)
- [http://www.zyxel.com/support/announcement\_unauthenticated.shtml](http://www.zyxel.com/support/announcement_unauthenticated.shtml)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2017-18368 · Markdown: https://rewindex.com/cve/CVE-2017-18368.md · JSON: https://rewindex.com/api/v1/cves/CVE-2017-18368 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:44:55.194Z