AUGUST 4, 2026
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Case File

CVE-2021-35033

HIGH · CVSS 7.8 EPSS 0.40%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-23 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. It may be remotely exploitable. Exploitation may require the attacker to be authenticated.

CVE
CVE-2021-35033
Severity
HIGH
CVSS
7.8
EPSS
0.40%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)