CVE-2017-14429 Command injection in n/a

Critical 9.8 Published 13 Sep 2017 Updated 6 May 2025

Unauthenticated remote attackers can execute arbitrary code as root on D-Link DIR-850L routers via shell metacharacter injection in the DHCP client.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-14429?

CVE-2017-14429 is a critical command injection vulnerability in n/a, published on 13 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The DHCP client on D-Link DIR-850L REV. A (with firmware through FW114WWb07_h2ab_beta1) and REV. B (with firmware through FW208WWb02) devices allows unauthenticated remote code execution as root because /etc/services/INET/inet_ipv4.php mishandles shell metacharacters, affecting generated files such as WAN-1-udhcpc.sh.

Weakness: CWE-78

Which versions are affected by CVE-2017-14429?

It affects 1 product.

Products include Dlink Dir-850l Firmware.

How do I fix CVE-2017-14429?

No fix has been published for CVE-2017-14429 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2017-14429 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-14429 exists.

Sources

Also known as GHSA-5gw4-h372-4w6q.