🛡️ CVE-2023-6397
🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-476 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-476
Public Exploit ✅ No
Source NVD
Published 2024-02-20
Updated 2026-06-08
Modified 2025-01-21
Fix URL N/A

Affected Packages

Software From version Fixed in
atp100-firmware
atp100w-firmware
atp200-firmware
atp500-firmware
atp700-firmware
atp800-firmware
usg-flex-100-firmware
usg-flex-100ax-firmware
usg-flex-100h-firmware
usg-flex-100w-firmware
usg-flex-200-firmware
usg-flex-200h-firmware
usg-flex-200hp-firmware
usg-flex-50-firmware
usg-flex-500-firmware
usg-flex-500h-firmware
usg-flex-50w-firmware
usg-flex-700-firmware
usg-flex-700h-firmware

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