CVE-2025-6620 TOTOLINK CA300-PoE upgrade.so setUpgradeUboot os command injection

Medium 5.3 Published 25 Jun 2025 Updated 26 Jun 2025

Remote attackers can execute arbitrary OS commands via the FileName argument in the setUpgradeUboot function of the TOTOLINK CA300-PoE firmware.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-6620?

CVE-2025-6620 is a medium-severity command injection vulnerability in TOTOLINK CA300-PoE, published on 25 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in TOTOLINK CA300-PoE 6.2c.884. It has been rated as critical. Affected by this issue is the function setUpgradeUboot of the file upgrade.so. The manipulation of the argument FileName leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-78, CWE-77

Which versions are affected by CVE-2025-6620?

It affects 1 product.

Products include Totolink Ca300-Poe Firmware.

How do I fix CVE-2025-6620?

No fix has been published for CVE-2025-6620 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-2025-6620 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6620 exists.

Sources

Also known as GHSA-7x9j-wf2g-2h5x.