CVE-2020-28899 Missing authorization in n/a
Remote attackers can access all router features without authentication, allowing password changes, Wi-Fi key retrieval, and internal network access.
- 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-2020-28899?
CVE-2020-28899 is a critical missing authorization vulnerability in n/a, published on 16 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Web CGI Script on ZyXEL LTE4506-M606 V1.00(ABDO.2)C0 devices does not require authentication, which allows remote unauthenticated attackers (via crafted JSON action data to /cgi-bin/gui.cgi) to use all features provided by the router. Examples: change the router password, retrieve the Wi-Fi passphrase, send an SMS message, or modify the IP forwarding to access the internal network.
Weakness: CWE-306
Which versions are affected by CVE-2020-28899?
It affects 3 products.
Products include Zyxel Lte4506-M606 Firmware, Zyxel Lte7460-M608 Firmware, Zyxel Wah7706 Firmware.
How do I fix CVE-2020-28899?
No fix has been published for CVE-2020-28899 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-2020-28899 being exploited?
There is no known exploitation of CVE-2020-28899 in the wild and no public exploit code.
Sources
Also known as GHSA-345j-gpg7-fhmx.