CVE-2023-6764 Information

Description

A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1 and USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1 could allow an attacker to achieve unauthorized remote code execution by sending a sequence of specially crafted payloads containing an invalid pointer; however such an attack would require detailed knowledge of an affected device’s memory layout and configuration.

Reference

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024