CVE-2020-29583

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-29583
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.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf Broken Link
https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release Release Notes
https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 Release Notes
https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html Broken Link Third Party Advisory
https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-cve-2020-29583/ Exploit Third Party Advisory
https://www.zyxel.com/support/CVE-2020-29583.shtml Vendor Advisory
https://www.zyxel.com/support/security_advisories.shtml Vendor Advisory
http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf Broken Link
https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release Release Notes
https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 Release Notes
https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html Broken Link Third Party Advisory
https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-cve-2020-29583/ Exploit Third Party Advisory
https://www.zyxel.com/support/CVE-2020-29583.shtml Vendor Advisory
https://www.zyxel.com/support/security_advisories.shtml Vendor Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:zyxel:usg20-vpn_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg20-vpn:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:zyxel:usg20w-vpn_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg20w-vpn:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:zyxel:usg40_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg40:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:zyxel:usg40w_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg40w:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:zyxel:usg60_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg60:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:zyxel:usg60w_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg60w:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:zyxel:usg110_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg110:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:zyxel:usg210_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg210:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND
cpe:2.3:o:zyxel:usg310_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg310:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:zyxel:usg1100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg1100:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:zyxel:usg1900_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg1900:-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:zyxel:usg2200_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg2200:-:*:*:*:*:*:*:*

Configuration 13 (hide)

AND
cpe:2.3:o:zyxel:zywall110_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall110:-:*:*:*:*:*:*:*

Configuration 14 (hide)

AND
cpe:2.3:o:zyxel:zywall310_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall310:-:*:*:*:*:*:*:*

Configuration 15 (hide)

AND
cpe:2.3:o:zyxel:zywall1100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zywall1100:-:*:*:*:*:*:*:*

Configuration 16 (hide)

AND
cpe:2.3:o:zyxel:atp100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp100:-:*:*:*:*:*:*:*

Configuration 17 (hide)

AND
cpe:2.3:o:zyxel:atp100w_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp100w:-:*:*:*:*:*:*:*

Configuration 18 (hide)

AND
cpe:2.3:o:zyxel:atp200_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp200:-:*:*:*:*:*:*:*

Configuration 19 (hide)

AND
cpe:2.3:o:zyxel:atp500_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp500:-:*:*:*:*:*:*:*

Configuration 20 (hide)

AND
cpe:2.3:o:zyxel:atp700_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp700:-:*:*:*:*:*:*:*

Configuration 21 (hide)

AND
cpe:2.3:o:zyxel:atp800_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp800:-:*:*:*:*:*:*:*

Configuration 22 (hide)

AND
cpe:2.3:o:zyxel:vpn50_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:*

Configuration 23 (hide)

AND
cpe:2.3:o:zyxel:vpn100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:*

Configuration 24 (hide)

AND
cpe:2.3:o:zyxel:vpn300_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:*

Configuration 25 (hide)

AND
cpe:2.3:o:zyxel:vpn1000_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:*

Configuration 26 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*

Configuration 27 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_100w_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*

Configuration 28 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_200_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*

Configuration 29 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_500_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*

Configuration 30 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_700_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*
History

21 Nov 2024, 05:24

Type Values Removed Values Added
References () http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf - Broken Link () http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf - Broken Link
References () https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release - Release Notes () https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release - Release Notes
References () https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 - Release Notes () https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 - Release Notes
References () https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html - Broken Link, Third Party Advisory () https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html - Broken Link, Third Party Advisory
References () https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-cve-2020-29583/ - Exploit, Third Party Advisory () https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-cve-2020-29583/ - Exploit, Third Party Advisory
References () https://www.zyxel.com/support/CVE-2020-29583.shtml - Vendor Advisory () https://www.zyxel.com/support/CVE-2020-29583.shtml - Vendor Advisory
References () https://www.zyxel.com/support/security_advisories.shtml - Vendor Advisory () https://www.zyxel.com/support/security_advisories.shtml - Vendor Advisory

26 Jul 2024, 19:46

Type Values Removed Values Added
References () http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf - () http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf - Broken Link
References () https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release - Release Notes, Vendor Advisory () https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release - Release Notes
References () https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 - Release Notes, Vendor Advisory () https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 - Release Notes
References () https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html - Third Party Advisory () https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html - Broken Link, Third Party Advisory
References () https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-cve-2020-29583/ - () https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-cve-2020-29583/ - Exploit, Third Party Advisory
First Time Zyxel usg Flex 200
Zyxel atp100w Firmware
Zyxel vpn100 Firmware
Zyxel usg Flex 500 Firmware
Zyxel vpn1000 Firmware
Zyxel vpn300
Zyxel atp100
Zyxel atp100w
Zyxel atp500 Firmware
Zyxel atp200
Zyxel atp700 Firmware
Zyxel atp800
Zyxel atp200 Firmware
Zyxel atp800 Firmware
Zyxel vpn50
Zyxel usg Flex 100
Zyxel vpn100
Zyxel usg Flex 200 Firmware
Zyxel vpn50 Firmware
Zyxel vpn1000
Zyxel usg Flex 700 Firmware
Zyxel usg Flex 700
Zyxel vpn300 Firmware
Zyxel usg Flex 100w
Zyxel usg Flex 100 Firmware
Zyxel atp500
Zyxel atp700
Zyxel usg Flex 500
Zyxel usg Flex 100w Firmware
Zyxel atp100 Firmware
CPE cpe:2.3:h:zyxel:atp100:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn50_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp100w:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn300_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_700_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:atp500_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp800:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:atp100w_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn1000_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_200_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:atp100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_500_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:atp700_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:atp800_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp500:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100w_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp200:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:atp700:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:atp200_firmware:4.60:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:*

07 Nov 2023, 03:21

Type Values Removed Values Added
References
  • {'url': 'http://ftp.zyxel.com/USG40/firmware/USG40_4.60(AALA.1)C0_2.pdf', 'name': 'http://ftp.zyxel.com/USG40/firmware/USG40_4.60(AALA.1)C0_2.pdf', 'tags': ['Vendor Advisory'], 'refsource': 'CONFIRM'}
  • () http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf -

28 Oct 2023, 01:15

Type Values Removed Values Added
References
  • (MISC) https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-cve-2020-29583/ -
Information

Published : 2020-12-22 22:15

Updated : 2024-11-21 05:24

NVD link : CVE-2020-29583

Mitre link : CVE-2020-29583

CVE.ORG link : CVE-2020-29583

JSON object : View

Products Affected

zyxel

  • vpn50
  • atp100_firmware
  • usg110_firmware
  • usg60w
  • zywall1100
  • usg1100
  • vpn300
  • usg210
  • usg_flex_700
  • usg1900
  • usg40w_firmware
  • vpn50_firmware
  • usg20w-vpn_firmware
  • zywall310_firmware
  • usg40_firmware
  • usg110
  • atp100w
  • usg_flex_200_firmware
  • zywall1100_firmware
  • atp500_firmware
  • vpn100
  • vpn100_firmware
  • zywall310
  • atp100w_firmware
  • usg60w_firmware
  • atp200_firmware
  • usg310
  • usg310_firmware
  • zywall110_firmware
  • usg2200_firmware
  • vpn300_firmware
  • atp700
  • usg_flex_100_firmware
  • usg_flex_100
  • usg_flex_500
  • atp100
  • usg_flex_200
  • usg_flex_700_firmware
  • usg20-vpn
  • usg1900_firmware
  • usg1100_firmware
  • usg60_firmware
  • usg2200
  • usg40w
  • atp700_firmware
  • usg_flex_100w_firmware
  • atp500
  • usg_flex_100w
  • usg60
  • usg210_firmware
  • zywall110
  • usg20-vpn_firmware
  • usg_flex_500_firmware
  • vpn1000_firmware
  • atp200
  • usg40
  • atp800_firmware
  • atp800
  • usg20w-vpn
  • vpn1000
CWE
CWE-522

Insufficiently Protected Credentials


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