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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2023-4398

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 41.9%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2023-4398
  • Zyxel » Atp100 » Version: N/A
    cpe:2.3:h:zyxel:atp100:-
  • Zyxel » Atp100w » Version: N/A
    cpe:2.3:h:zyxel:atp100w:-
  • Zyxel » Atp200 » Version: N/A
    cpe:2.3:h:zyxel:atp200:-
  • Zyxel » Atp500 » Version: N/A
    cpe:2.3:h:zyxel:atp500:-
  • Zyxel » Atp700 » Version: N/A
    cpe:2.3:h:zyxel:atp700:-
  • Zyxel » Atp800 » Version: N/A
    cpe:2.3:h:zyxel:atp800:-
  • Zyxel » Usg 20w-Vpn » Version: N/A
    cpe:2.3:h:zyxel:usg_20w-vpn:-
  • Zyxel » Usg Flex 100 » Version: N/A
    cpe:2.3:h:zyxel:usg_flex_100:-
  • Zyxel » Usg Flex 100w » Version: N/A
    cpe:2.3:h:zyxel:usg_flex_100w:-
  • Zyxel » Usg Flex 200 » Version: N/A
    cpe:2.3:h:zyxel:usg_flex_200:-
  • Zyxel » Usg Flex 500 » Version: N/A
    cpe:2.3:h:zyxel:usg_flex_500:-
  • Zyxel » Usg Flex 50 » Version: N/A
    cpe:2.3:h:zyxel:usg_flex_50:-
  • Zyxel » Usg Flex 50w » Version: N/A
    cpe:2.3:h:zyxel:usg_flex_50w:-
  • Zyxel » Usg Flex 700 » Version: N/A
    cpe:2.3:h:zyxel:usg_flex_700:-
  • Zyxel » Vpn1000 » Version: N/A
    cpe:2.3:h:zyxel:vpn1000:-
  • Zyxel » Vpn100 » Version: N/A
    cpe:2.3:h:zyxel:vpn100:-
  • Zyxel » Vpn300 » Version: N/A
    cpe:2.3:h:zyxel:vpn300:-
  • Zyxel » Vpn50 » Version: N/A
    cpe:2.3:h:zyxel:vpn50:-
  • Zyxel » Vpn50w » Version: N/A
    cpe:2.3:h:zyxel:vpn50w:-
  • Zyxel » Zld » Version: 4.16
    cpe:2.3:o:zyxel:zld:4.16
  • Zyxel » Zld » Version: 4.20
    cpe:2.3:o:zyxel:zld:4.20
  • Zyxel » Zld » Version: 4.30
    cpe:2.3:o:zyxel:zld:4.30
  • Zyxel » Zld » Version: 4.32
    cpe:2.3:o:zyxel:zld:4.32
  • Zyxel » Zld » Version: 4.39
    cpe:2.3:o:zyxel:zld:4.39
  • Zyxel » Zld » Version: 4.50
    cpe:2.3:o:zyxel:zld:4.50
  • Zyxel » Zld » Version: 4.55
    cpe:2.3:o:zyxel:zld:4.55
  • Zyxel » Zld » Version: 4.60
    cpe:2.3:o:zyxel:zld:4.60
  • Zyxel » Zld » Version: 5.00
    cpe:2.3:o:zyxel:zld:5.00
  • Zyxel » Zld » Version: 5.10
    cpe:2.3:o:zyxel:zld:5.10
  • Zyxel » Zld » Version: 5.37
    cpe:2.3:o:zyxel:zld:5.37


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