Findings

CVE-2017-6884

Zyxel EMG2926 Routers Command Injection Vulnerability

Published Apr 6, 2017 · updated Oct 1, 2026 · zyxel emg2926 firmware

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.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 6, 2017 · Catalog

    Detected

    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.

  2. Sep 18, 2023 · CISA KEV

    Known exploited

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

  3. Oct 9, 2023 · CISA KEV

    Remediation due

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

  4. Oct 1, 2026 · Catalog

    Updated

    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.

Required action

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

CISA due date Oct 9, 2023

Affected

  • cpe zyxel/emg2926 firmwarev1.00\(aaqt.4\)b8
  • vendor Zyxel EMG2926 Routersversion unspecified

Sources

  • CISA KEVCVE-2017-6884

    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.

    cisa.gov
  • CVE.orgCVE-2017-6884

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2017-6884

    30-day exploitation probability 34.6%

    first.org
  • Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDCVE-2017-6884

    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 o

    nvd.nist.gov

References

CVE-2017-6884 · ZeroDay Findings