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CVE-2021-35033

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CVE-2021-35033

Published: Nov 23, 2021

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

7.8

HIGH

Description

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.

VendorProductVersions

Zyxel

NBG6818 series firmware

affected
1.00(ABSC.0)C0 through 1.00(ABSC.4)C0

Zyxel

NBG7815 series firmware

affected
1.00(ABSK.0)C0 through 1.00(ABSK.6)C0

Zyxel

WSQ20 series firmware

affected
1.00(ABOF.0)C0 through 1.00(ABOF.10)C0

Zyxel

WSQ50 series firmware

affected
1.00(ABKJ.0)C0 through 2.20(ABKJ.6)C0

Zyxel

WSQ60 series firmware

affected
1.00(ABND.0)C0 through 2.20(ABND.7)C0

Zyxel

WSR30 series firmware

affected
1.00(ABMY.0)C0 through 1.00(ABMY.11)C0

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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