AUGUST 4, 2026
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Case File

CVE-2021-35029

CRITICAL · CVSS 9.8 EPSS 2.25%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-07-02 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It may be remotely exploitable.

CVE
CVE-2021-35029
Severity
CRITICAL
CVSS
9.8
EPSS
2.25%

Original NVD Description

An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.

Related CVEs

Other vulnerabilities affecting the same vendor(s)