CVE-2025-9577 TOTOLINK X2000R Administrative shadow.sample default credentials

Low 2.0 Published 28 Aug 2025 Updated 28 Aug 2025

Local attackers can exploit default administrative credentials in the shadow.sample file to gain privileged access to the TOTOLINK X2000R router.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-9577?

CVE-2025-9577 is a low-severity vulnerability in TOTOLINK X2000R, published on 28 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A security flaw has been discovered in TOTOLINK X2000R up to 2.0.0. The affected element is an unknown function of the file /etc/shadow.sample of the component Administrative Interface. The manipulation results in use of default credentials. Attacking locally is a requirement. Attacks of this nature are highly complex. The exploitability is described as difficult. The exploit has been released to the public and may be exploited.

Weakness: CWE-1392

Which versions are affected by CVE-2025-9577?

It affects 1 product.

Products include Totolink X2000r Firmware.

How do I fix CVE-2025-9577?

No fix has been published for CVE-2025-9577 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-9577 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9577 exists.

Sources

Also known as GHSA-g76c-g25x-rqgp.