CVE-2025-4270 TOTOLINK A720R Config cstecgi.cgi information disclosure

Medium 6.9 Published 5 May 2025 Updated 5 May 2025

Remote attackers can exploit the cstecgi.cgi script to disclose sensitive configuration data from TOTOLINK A720R routers.

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-2025-4270?

CVE-2025-4270 is a medium-severity vulnerability in TOTOLINK A720R, published on 5 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown function of the file /cgi-bin/cstecgi.cgi of the component Config Handler. The manipulation of the argument topicurl with the input getInitCfg/getSysStatusCfg leads to information disclosure. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-284, CWE-200

Which versions are affected by CVE-2025-4270?

It affects 1 product.

Products include Totolink A720r Firmware.

How do I fix CVE-2025-4270?

No fix has been published for CVE-2025-4270 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-4270 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4270 exists.

Sources

Also known as GHSA-4jh5-95f7-hf6w.