Medium severity4.9NVD Advisory· Published Sep 3, 2024· Updated Jun 17, 2026

CVE-2024-6343

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Zyxel/Zld
cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:*
Range: >=4.32,<5.39
Zyxel/ATP series firmwarellm-fuzzy
Range: V4.32 - V5.38
Zyxel/USG FLEX series firmwarellm-fuzzy
Range: V4.50 - V5.38
Zyxel/USG20(W)-VPN series firmwarellm-fuzzy
Range: V4.16 - V5.38
Zyxel/ATP seriescpe-rescue
Range: versions V4.32 through V5.38
Zyxel/USG FLEX seriescpe-rescue2 versions
versions V4.16 through V5.38+ 1 more
- (no CPE)range: versions V4.16 through V5.38
- (no CPE)range: versions V4.50 through V5.38
Zyxel/USG20(W)-VPN seriescpe-rescue
Range: versions V4.16 through V5.38

Patches

Vulnerability mechanics

References

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

News mentions

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cvss	0.319
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000