Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | Lte4506-M606 Firmware | < v1.00\(abdo.6\)c0 |
| Zyxel | Lte4506-M606 | - |
| Zyxel | Lte7460-M608 Firmware | < v1.00\(abfr.5\)c0 |
| Zyxel | Lte7460-M608 | - |
| Zyxel | Wah7706 Firmware | < v1.00\(abbc.11\)c0 |
| Zyxel | Wah7706 | - |
Related Weaknesses (CWE)
References
- https://www.zyxel.com/support/Zyxel-security-advisory-for-CGI-vulnerability-of-LVendor Advisory
- https://www.zyxel.com/support/Zyxel-security-advisory-for-CGI-vulnerability-of-LVendor Advisory
FAQ
What is CVE-2020-28899?
CVE-2020-28899 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 us...
How severe is CVE-2020-28899?
CVE-2020-28899 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-28899?
Check the references section above for vendor advisories and patch information. Affected products include: Zyxel Lte4506-M606 Firmware, Zyxel Lte4506-M606, Zyxel Lte7460-M608 Firmware, Zyxel Lte7460-M608, Zyxel Wah7706 Firmware.