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

Source: https://junglewise.ai/threats/cve-2017-18368-zyxel-p660hn-t1a-routers-command-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-08-07. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2017-18368 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2023-08-07

Zyxel P660HN-T1A routers contain an unauthenticated command injection vulnerability in the Remote System Log forwarding function. The flaw exists in the ViewLog.asp page and can be exploited via the remote_host parameter to execute arbitrary OS commands.

Vendors: [Zyxel](https://junglewise.ai/threats/vendors/zyxel).

## Quick answers

**Is CVE-2017-18368 exploited in the wild?** Yes. CVE-2017-18368 is known to be exploited in the wild, first recorded on 7 August 2023. Treat it as urgent.

**How severe is CVE-2017-18368?** Critical severity, with a CVSS score of 9.8, published 7 August 2023.

**Which products and versions are affected?** Zyxel P660HN-T1A v1 firmware 7.3.15.0 v001 / 3.40(ULM.0)b31; Zyxel P660HN-T1A v2 firmware 7.3.15.0; Billion 5200W-T firmware 7.3.8.0.

**Is there a fix for CVE-2017-18368?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2017-18368 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2017-18368?** Check whether you run Zyxel P660HN-T1A Routers. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Zyxel P660HN-T1A v1 firmware 7.3.15.0 v001 / 3.40(ULM.0)b31
- Zyxel P660HN-T1A v2 firmware 7.3.15.0
- Billion 5200W-T firmware 7.3.8.0

## Timeline

- 2017-01-24: disclosed: Initial public disclosure via Full Disclosure mailing list
- 2019-05-03: other: Initial NIST NVD analysis published
- 2023-08-07: kev added: Added to CISA Known Exploited Vulnerabilities Catalog