ACTIVELY EXPLOITED
CVE-2017-6884: Zyxel EMG2926 Routers Command Injection Vulnerability
| Vendor | Zyxel |
|---|---|
| Product | EMG2926 Routers |
| Actively exploited | Yes |
| Added to CISA KEV | 18 Sep 2023 |
| CISA federal deadline | 9 Oct 2023 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-78 |
Required action (CISA's text)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description (NVD)
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.
SOURCES
Other Zyxel flaws
- CVE-2026-7273: Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
- CVE-2024-40891: Zyxel DSL CPE OS Command Injection Vulnerability
- CVE-2024-40890: Zyxel DSL CPE OS Command Injection Vulnerability
- CVE-2024-11667: Zyxel Multiple Firewalls Path Traversal Vulnerability
- CVE-2017-18368: Zyxel P660HN-T1A Routers Command Injection Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.