CVE-2023-31729 Command injection in n/a

Critical 9.8 Published 18 May 2023 Updated 9 Jul 2026

Attackers can execute arbitrary commands on TOTOLINK A3300R routers via a vulnerable CGI endpoint.

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-2023-31729?

CVE-2023-31729 is a critical command injection vulnerability in Totolink A3300r Firmware, published on 18 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

TOTOLINK A3300R v17.0.0cu.557 is vulnerable to Command Injection via /cgi-bin/cstecgi.cgi.

Weakness: CWE-77

Which versions are affected by CVE-2023-31729?

It affects 1 product.

Products include Totolink A3300r Firmware.

How do I fix CVE-2023-31729?

No fix has been published for CVE-2023-31729 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-2023-31729 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-31729 exists.

All Totolink A3300r Firmware vulnerabilities

Sources

Also known as GHSA-2vcj-rvm8-xjjq.