CVE-2023-6764

Summary

CVE-2023-6764 is a format string vulnerability discovered in the IPSec VPN feature of Zyxel ATP, USG FLEX, USG FLEX 50(W), and USG20(W)-VPN series firmware versions ranging from 4.16 to 5.37 Patch 1. This flaw affects various Zyxel devices and could enable an attacker to execute unauthorized remote code. The vulnerability arises due to a function's susceptibility to receiving specially crafted payloads that contain an invalid pointer. However, exploiting this vulnerability demands extensive knowledge of the affected device's memory layout and configuration.

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