CVE-2023-6397

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

A null pointer dereference vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 could allow a LAN-based attacker to cause denial-of-service (DoS) conditions by downloading a crafted RAR compressed file onto a LAN-side host if the firewall has the “Anti-Malware” feature enabled.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Feb 20, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2023-6397: Medium severity, CVSS 5.3 | Vulnix