CVE-2021-35029

State: Published
Severity: 9.8 Critical
Published: Jul 2, 2021
Updated: Aug 4, 2024
Reserved: Jun 17, 2021

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Zyxel

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
USG/Zywall series FirmwareZyxel	4.35 through 4.64Affected
USG FLEX series FirmwareZyxel	4.35 through 5.01Affected
ATP series FirmwareZyxel	4.35 through 5.01Affected
VPN series FirmwareZyxel	4.35 through 5.01Affected

References

https://www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.