https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-05T17:57:38.471845+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2023-4398 CVE-2023-4398 2026-10-05T17:57:38.488424+00:00

Affected: Zyxel ATP series firmware, Zyxel USG FLEX series firmware, Zyxel USG FLEX 50(W) series firmware, Zyxel USG20(W)-VPN series firmware, Zyxel VPN series firmware, zyxel atp_firmware, zyxel usg_flex_firmware, zyxel usg_flex_50w_firmware, zyxel usg20w-vpn_firmware, zyxel vpn_firmware

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.