CVE-2024-6343

MediumCVSS 4.9/10Last modified Jun 17, 2026

Description

A buffer overflow vulnerability in the CGI program of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through V5.38, USG FLEX 50(W) series firmware versions from V4.16 through V5.38, and USG20(W)-VPN series firmware versions from V4.16 through V5.38 could allow an authenticated attacker with administrator privileges to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.

Metrics

CVSS 3.1 4.9/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-120

Affected software

Vendor	Product	Versions
Zyxel	ATP series firmware	versions V4.32 through V5.38
Zyxel	USG FLEX series firmware	versions V4.50 through V5.38
Zyxel	USG FLEX 50(W) series firmware	versions V4.16 through V5.38
Zyxel	USG20(W)-VPN series firmware	versions V4.16 through V5.38

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-09-03-2024Vendor Advisory

Timeline

Published: Sep 3, 2024
Last modified: Jun 17, 2026
NVD status: Analyzed

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