CVE-2025-6916 TOTOLINK T6 formLoginAuth.htm Form_Login missing authentication
Attackers on the local network can bypass authentication in the TOTOLINK T6 router login form by manipulating specific parameters.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-6916?
CVE-2025-6916 is a high-severity missing authorization vulnerability in TOTOLINK T6, published on 30 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability, which was classified as critical, was found in TOTOLINK T6 4.1.5cu.748_B20211015. This affects the function Form_Login of the file /formLoginAuth.htm. The manipulation of the argument authCode/goURL leads to missing authentication. The attack needs to be initiated within the local network. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-6916?
It affects 1 product.
Products include Totolink T6 Firmware.
How do I fix CVE-2025-6916?
No fix has been published for CVE-2025-6916 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-6916 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6916 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in TOTOLINK T6
Sources
Also known as GHSA-hqqv-6f9q-x66q.