CVE-2023-6764

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.

• zyxel atp100 firmware (>= 4.32 < 5.37) • zyxel atp100 firmware 5.37 • zyxel atp100w firmware (>= 4.32 < 5.37) • zyxel atp100w firmware 5.37 • zyxel atp200 firmware (>= 4.32 < 5.37) • zyxel atp200 firmware 5.37 • zyxel atp500 firmware (>= 4.32 < 5.37) • zyxel atp500 firmware 5.37 • zyxel atp700 firmware (>= 4.32 < 5.37) • zyxel atp700 firmware 5.37 • zyxel atp800 firmware (>= 4.32 < 5.37) • zyxel atp800 firmware 5.37 • zyxel usg flex 100 firmware (>= 4.50 < 5.37) • zyxel usg flex 100 firmware 5.37 • zyxel usg flex 100ax firmware (>= 4.50 < 5.37) • zyxel usg flex 100ax firmware 5.37 • zyxel usg flex 100h firmware (>= 4.50 < 5.37) • zyxel usg flex 100h firmware 5.37 • zyxel usg flex 100w firmware (>= 4.50 < 5.37) • zyxel usg flex 100w firmware 5.37 • zyxel usg flex 200 firmware (>= 4.50 < 5.37) • zyxel usg flex 200 firmware 5.37 • zyxel usg flex 200h firmware (>= 4.50 < 5.37) • zyxel usg flex 200h firmware 5.37 • zyxel usg flex 200hp firmware (>= 4.50 < 5.37) • zyxel usg flex 200hp firmware 5.37 • zyxel usg flex 500 firmware (>= 4.50 < 5.37) • zyxel usg flex 500 firmware 5.37 • zyxel usg flex 500h firmware (>= 4.50 < 5.37) • zyxel usg flex 500h firmware 5.37 • zyxel usg flex 700 firmware (>= 4.50 < 5.37) • zyxel usg flex 700 firmware 5.37 • zyxel usg flex 700h firmware (>= 4.50 < 5.37) • zyxel usg flex 700h firmware 5.37 • zyxel usg flex 50 firmware (>= 4.16 < 5.37) • zyxel usg flex 50 firmware 5.37 • zyxel usg flex 50w firmware (>= 4.16 < 5.37) • zyxel usg flex 50w firmware 5.37 • zyxel usg20-vpn firmware (>= 4.16 < 5.37) • zyxel usg20-vpn firmware 5.37 • zyxel usg20w-vpn firmware (>= 4.16 < 5.37) • zyxel usg20w-vpn firmware 5.37