CVE-2020-29583 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  9.8 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://ftp.zyxel.com/USG40/firmware/USG40_4.60(AALA.1)C0_2.pdf Vendor Advisory 
https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release Release Notes  Vendor Advisory 
https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 Release Notes  Vendor Advisory 
https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html Third Party Advisory 
https://www.zyxel.com/support/CVE-2020-29583.shtml Vendor Advisory 
https://www.zyxel.com/support/security_advisories.shtml Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-312 Cleartext Storage of Sensitive Information cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-29583
NVD Published Date:
12/22/2020
NVD Last Modified:
01/14/2021
Source:
MITRE