Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2020-29583 First vendor Publication 2020-12-22
Vendor Cve Last vendor Modification 2025-04-03

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29583

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-522 Insufficiently Protected Credentials (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1

Sources (Detail)

http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf
https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-fir...
https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1...
https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html
https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-...
https://www.zyxel.com/support/CVE-2020-29583.shtml
https://www.zyxel.com/support/security_advisories.shtml
Source Url

Alert History

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Date Informations
2025-05-27 01:31:31
  • Multiple Updates
2025-02-05 00:21:26
  • Multiple Updates
2024-11-28 13:43:49
  • Multiple Updates
2024-07-27 00:27:43
  • Multiple Updates
2023-11-07 21:36:10
  • Multiple Updates
2023-10-28 09:28:29
  • Multiple Updates
2022-07-13 17:27:53
  • Multiple Updates
2021-01-14 17:22:51
  • Multiple Updates
2020-12-24 00:22:51
  • Multiple Updates
2020-12-23 21:23:26
  • Multiple Updates
2020-12-23 05:22:51
  • First insertion