CVE-2021-46009 Missing authorization in n/a

Critical 9.8 Published 30 Mar 2022 Updated 9 Jul 2026

Attackers can access sensitive pages and modify admin configurations on Totolink routers without authentication.

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-2021-46009?

CVE-2021-46009 is a critical missing authorization vulnerability in n/a, published on 30 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Totolink A3100R V5.9c.4577, multiple pages can be read by curl or Burp Suite without authentication. Additionally, admin configurations can be set without cookies.

Weakness: CWE-306

Which versions are affected by CVE-2021-46009?

It affects 1 product.

Products include Totolink A3100r Firmware.

How do I fix CVE-2021-46009?

No fix has been published for CVE-2021-46009 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-2021-46009 being exploited?

There is no known exploitation of CVE-2021-46009 in the wild and no public exploit code.

Sources

Also known as GHSA-45m8-2rw6-c6j3.