CVE-2017-6884
High 8.8 Exploited in the wild (KEV) Used in ransomware campaigns
Confirmed active exploitation — CISA KEV catalog
- Name
- Zyxel EMG2926 Routers Command Injection Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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.
Metrics
- CVSS 3.1
-
8.8 (HIGH)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 33% (percentile: 98) as of 1 November 2026
- CWE
- CWE-78
Affected products
zyxel: emg2926 firmware; zyxel: emg2926
References
- https://www.exploit-db.com/exploits/41782/ ExploitThird Party AdvisoryVDB Entry
- https://www.exploit-db.com/exploits/41782/ ExploitThird Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017… US Government Resource