CVE-2017-6884
CISA KEVPublished September 18, 2023 · Updated April 3, 2026
high
Official Description+
Zyxel EMG2926 routers contain a command injection vulnerability located in the diagnostic tools, specifically the nslookup function. A malicious user may exploit numerous vectors to execute malicious commands on the router, such as the ping_ip parameter to the expert/maintenance/diagnostic/nslookup URI.
Affected Products
| Vendor | Product |
|---|---|
| Zyxel | EMG2926 Routers |
Patch Status
Patch by 2023-10-09
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2017-6884.