What is CVE-2017-15226?

CVE-2017-15226 is a critical-severity vulnerability in Zyxel Nbg6716, classified under OS Command Injection. CVSS score: 9.8/10. Published 2017-10-10.

How severe is CVE-2017-15226?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Zyxel Nbg6716

CVE-2017-15226

Zyxel NBG6716 V1.00(AAKG.9)C0 devices allow command injection in the ozkerz component because beginIndex and endIndex are used directly in a popen call.

Vulnerability class: Command Injection (OS Command Injection)

Published 2017-10-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.022 (82.1th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Zyxel Nbg6716
Zyxel Nbg6716 Firmware — versions 1.00\(aakg.9\)c0, 1.00(aakg.9)c0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.secarma.co.uk/labs/sohopelessly-broken-0-day-strategy/ (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-15226?: CVE-2017-15226 is a critical-severity vulnerability in Zyxel Nbg6716, classified under OS Command Injection. CVSS score: 9.8/10. Published 2017-10-10.
How severe is CVE-2017-15226?: Critical severity. CVSS v3 base score is 9.8 out of 10.