HTTP: Zyxel products use of hard coded credentials
This signature detects attempts to exploit a known vulnerability against Zyxel. A successful attack can lead to arbitrary code execution.
Extended Description
Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges.
References
CVE: CVE-2020-29583
Short Name
HTTP:MISC:ZYXEL-HARDCODED-CRED
Severity
Critical
Recommended
False
Recommended Action
Drop
Category
HTTP
Keywords
CVE-2020-29583 Zyxel coded credentials hard of products use
Release Date
04/30/2025
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3804
False Positive
Unknown