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

CVE-2017-6884 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2023-09-18

Zyxel EMG2926 routers contain an OS command injection vulnerability in the diagnostic tools' nslookup function. An authenticated attacker can execute arbitrary commands via the ping_ip parameter to the expert/maintenance/diagnostic/nslookup URI.

Vendors: Zyxel.

Quick answers

Is CVE-2017-6884 exploited in the wild?
Yes. CVE-2017-6884 is known to be exploited in the wild, first recorded on 18 September 2023. Treat it as urgent.
How severe is CVE-2017-6884?
Critical severity, with a CVSS score of 8.8, published 18 September 2023.
Which products and versions are affected?
Zyxel EMG2926 V1.00(AAQT.4)b8.
Is there a fix for CVE-2017-6884?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2017-6884 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2017-6884?
Check whether you run Zyxel EMG2926 Routers. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Zyxel EMG2926 V1.00(AAQT.4)b8

Timeline

  • 2017-04-06: disclosed: NVD Published Date
  • 2023-09-18: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2023-10-09: other: CISA KEV due date for remediation

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