Vulnerabilities > Zyxel > ZLD > High

DATE CVE VULNERABILITY TITLE RISK
2023-11-28 CVE-2023-4398 Integer Overflow or Wraparound vulnerability in Zyxel ZLD
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.
network
low complexity
zyxel CWE-190
7.5