CVE-2021-35033

A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60, and WSR30 firmware with pre-configured password management could allow an attacker to obtain root access of the device, if the local attacker dismantles the device and uses a USB-to-UART cable to connect the device, or if the remote assistance feature had been enabled by an authenticated user.
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:zyxel:nbg6818_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nbg6818:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:zyxel:nbg7815_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nbg7815:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:zyxel:wsq20_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsq20:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:zyxel:wsq50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsq50:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:zyxel:wsq60_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsq60:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:zyxel:wsr30_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsr30:-:*:*:*:*:*:*:*

History

27 Oct 2022, 16:59

Type Values Removed Values Added
CWE CWE-522 CWE-287

05 Apr 2022, 20:57

Type Values Removed Values Added
References (MISC) https://www.tenable.com/security/research/tra-2022-06 - (MISC) https://www.tenable.com/security/research/tra-2022-06 - Exploit, Third Party Advisory

28 Feb 2022, 20:15

Type Values Removed Values Added
References
  • (MISC) https://www.tenable.com/security/research/tra-2022-06 -

01 Dec 2021, 15:25

Type Values Removed Values Added
CPE cpe:2.3:o:zyxel:wsq20_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:wsr30_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsq60:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsq50:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:wsq50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nbg7815_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nbg6818:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:wsq60_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsr30:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nbg6818_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:wsq20:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:nbg7815:-:*:*:*:*:*:*:*
CWE CWE-522
References (CONFIRM) https://www.zyxel.com/support/Zyxel_security_advisory_for_pre-configured_password_management_vulnerability_of_home_routers_and_WiFi_systems.shtml - (CONFIRM) https://www.zyxel.com/support/Zyxel_security_advisory_for_pre-configured_password_management_vulnerability_of_home_routers_and_WiFi_systems.shtml - Vendor Advisory
CVSS v2 : unknown
v3 : unknown
v2 : 6.9
v3 : 7.8

23 Nov 2021, 22:15

Type Values Removed Values Added
New CVE

Information

Published : 2021-11-23 22:15

Updated : 2023-12-10 14:09


NVD link : CVE-2021-35033

Mitre link : CVE-2021-35033

CVE.ORG link : CVE-2021-35033


JSON object : View

Products Affected

zyxel

  • wsq60_firmware
  • wsq20
  • wsr30_firmware
  • wsr30
  • nbg7815_firmware
  • nbg7815
  • wsq50
  • wsq60
  • nbg6818
  • wsq50_firmware
  • nbg6818_firmware
  • wsq20_firmware
CWE
CWE-287

Improper Authentication

CWE-260

Password in Configuration File