AUGUST 4, 2026
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Case File

CVE-2023-6397

MEDIUM · CVSS 6.5 EPSS 0.30%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-02-20 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. It may lead to a denial-of-service condition.

CVE
CVE-2023-6397
Severity
MEDIUM
CVSS
6.5
EPSS
0.30%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)