CVE-2020-29583

CVSS V2 High 10 CVSS V3 Critical 9.8
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.
Overview
  • CVE ID
  • CVE-2020-29583
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-12-22T22:15:14
  • Last Modified Date
  • 2022-07-12T17:42:04
Weakness Enumerations
CWE URL
CWE-522 http://cwe.mitre.org/data/definitions/522.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:zyxel:usg20-vpn_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg20-vpn:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg20w-vpn_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg20w-vpn:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg40_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg40:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg40w_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg40w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg60_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg60:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg60w_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg60w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg110_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg110:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg210_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg210:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg310_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg310:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg1100_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg1100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg1900_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg1900:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:usg2200_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:usg2200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:zywall110_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:zywall110:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:zywall310_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:zywall310:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:zyxel:zywall1100_firmware:4.60:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:zyxel:zywall1100:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 10
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.zyxel.com/support/security_advisories.shtml Vendor Advisory
https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 Release Notes Vendor Advisory
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://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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-29583
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29583
History
Created Old Value New Value Data Type Notes
2022-05-10 07:27:21 Added to TrackCVE
2022-12-05 18:42:47 2020-12-22T22:15Z 2020-12-22T22:15:14 CVE Published Date updated
2022-12-05 18:42:47 2022-07-12T17:42:04 CVE Modified Date updated
2022-12-05 18:42:47 Analyzed Vulnerability Status updated