Vulnerabilities > CVE-2023-4398 - Unspecified vulnerability in Zyxel ZLD

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

zyxel

NVD

Published: 2023-11-28

Updated: 2024-11-21

Summary

An integer overflow vulnerability in the source code of the QuickSec IPSec toolkit used in the VPN feature of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions on an affected device by sending a crafted IKE packet.

Vulnerable Configurations

Part	Description	Count
OS	Zyxel Zyxel ZLD 4.32 Zyxel ZLD 4.39 Zyxel ZLD 4.50 Zyxel ZLD 4.55 Zyxel ZLD 5.00 Zyxel ZLD 5.10 Zyxel ZLD 5.37 Zyxel ZLD 4.16 Zyxel ZLD 4.30	9
Hardware	Zyxel Zyxel Atp100 - Zyxel Atp100W - Zyxel Atp200 - Zyxel Atp500 - Zyxel Atp700 - Zyxel Atp800 - Zyxel USG Flex 100 - Zyxel USG Flex 100W - Zyxel USG Flex 200 - Zyxel USG Flex 50 - Zyxel USG Flex 500 - Zyxel USG Flex 50W - Zyxel USG Flex 700 - Zyxel USG 20W VPN - Zyxel Vpn50W - Zyxel Vpn100 - Zyxel Vpn1000 - Zyxel Vpn300 - Zyxel Vpn50 -	19

Summary

Vulnerable Configurations

References