# CVE-2017-6884: Zyxel EMG2926 Routers Command Injection Vulnerability

Source: https://junglewise.ai/threats/cve-2017-6884-zyxel-emg2926-routers-command-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-09-18. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2017-6884 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2023-09-18

Zyxel EMG2926 routers contain an OS command injection vulnerability in the diagnostic tools' nslookup function. An authenticated attacker can execute arbitrary commands via the ping_ip parameter to the expert/maintenance/diagnostic/nslookup URI.

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

## Quick answers

**Is CVE-2017-6884 exploited in the wild?** Yes. CVE-2017-6884 is known to be exploited in the wild, first recorded on 18 September 2023. Treat it as urgent.

**How severe is CVE-2017-6884?** Critical severity, with a CVSS score of 8.8, published 18 September 2023.

**Which products and versions are affected?** Zyxel EMG2926 V1.00(AAQT.4)b8.

**Is there a fix for CVE-2017-6884?** 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-2017-6884 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2017-6884?** Check whether you run Zyxel EMG2926 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 EMG2926 V1.00(AAQT.4)b8

## Timeline

- 2017-04-06: disclosed: NVD Published Date
- 2023-09-18: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2023-10-09: other: CISA KEV due date for remediation