CVE-2023-39809 Command injection in n/a

Critical 9.8 Published 21 Aug 2023 Updated 9 Jul 2026

An OS command injection vulnerability in NVK iBSG allows attackers to execute arbitrary commands via the system_hostname parameter.

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-2023-39809?

CVE-2023-39809 is a critical command injection vulnerability in n/a, published on 21 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

N.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain an OS command injection vulnerability via shell metacharacters in the system_hostname parameter at /manage/network-basic.php.

Weakness: CWE-77

Which versions are affected by CVE-2023-39809?

It affects 1 product.

Products include Nvki Intelligent Broadband Subscriber Gateway.

How do I fix CVE-2023-39809?

No fix has been published for CVE-2023-39809 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-2023-39809 being exploited?

There is no known exploitation of CVE-2023-39809 in the wild and no public exploit code.

Sources

Also known as GHSA-5fvp-953q-q2rj.