CVE-2025-28256 Command injection in n/a

Critical 9.8 Published 28 Mar 2025 Updated 31 Mar 2025

A remote attacker can execute arbitrary code on TOTOLINK A3100R routers via the setWebWlanIdx parameter in the wireless module.

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-2025-28256?

CVE-2025-28256 is a critical command injection vulnerability in n/a, published on 28 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue in TOTOLINK A3100R V4.1.2cu.5247_B20211129 allows a remote attacker to execute arbitrary code via the setWebWlanIdx of the file /lib/cste_modules/wireless.so.

Weakness: CWE-78

Which versions are affected by CVE-2025-28256?

It affects 1 product.

Products include Totolink A3100r Firmware.

How do I fix CVE-2025-28256?

No fix has been published for CVE-2025-28256 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-2025-28256 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-28256 exists.

Sources

Also known as GHSA-rhpc-22qh-75f4.