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

> CVE-2017-6884: Zyxel EMG2926 Routers Command Injection Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2017-6884
Last updated: 2026-10-01T18:18:55Z

- Published: 2017-04-06 17:00 UTC · Updated: 2026-10-01 18:18 UTC · Assigner: mitre
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 33.0%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-09-18, federal due date 2023-10-09, ransomware use: Known

## Description

A command injection vulnerability was discovered on the Zyxel EMG2926 home router with firmware V1.00(AAQT.4)b8. The vulnerability is located in the diagnostic tools, specifically the nslookup function. A malicious user may exploit numerous vectors to execute arbitrary commands on the router, such as the ping\_ip parameter to the expert/maintenance/diagnostic/nslookup URI.

## CISA required action

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

## Affected vendors and products

- Zyxel: EMG2926 Routers

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2017-6884)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2017-6884)
- [https://www.exploit-db.com/exploits/41782/](https://www.exploit-db.com/exploits/41782/)

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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-2017-6884 · Markdown: https://rewindex.com/cve/CVE-2017-6884.md · JSON: https://rewindex.com/api/v1/cves/CVE-2017-6884 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:44:02.096Z