CVE-2024-42058

HIGH

Zyxel ATP/USG FLEX/USG20(W)-VPN 4.32-5.38 - Unauthenticated Denial of Service via Crafted Packet

Title source: llm

Description

A null pointer dereference vulnerability in 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 V5.20 through V5.38, and USG20(W)-VPN series firmware versions from V5.20 through V5.38 could allow an unauthenticated attacker to cause DoS conditions by sending crafted packets to a vulnerable device.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

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

Scores

CVSS v3 7.5

EPSS 0.0044

EPSS Percentile 63.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (1)

zyxel/zld 4.32 - 5.39

Published Sep 03, 2024

Tracked Since Feb 18, 2026