CVE-2021-4030 Cross-site request forgery in ARMOR Z1 (NBG6816) firmware
An attacker can execute arbitrary commands on Zyxel ARMOR devices by tricking a local user into visiting a malicious website via CSRF.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-4030?
CVE-2021-4030 is a high-severity vulnerability in Zyxel ARMOR Z1 (NBG6816) firmware, published on 22 Feb 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.
Weakness: CWE-352
Which versions are affected by CVE-2021-4030?
It affects 2 products.
Products include Zyxel Nbg6816 Firmware, Zyxel Nbg6817 Firmware.
How do I fix CVE-2021-4030?
No fix has been published for CVE-2021-4030 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-4030 being exploited?
There is no known exploitation of CVE-2021-4030 in the wild and no public exploit code.
Other vulnerabilities in Zyxel ARMOR Z1 (NBG6816) firmware
Sources
Also known as GHSA-f5hq-fhh6-8vh6.