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MEDIUM · 4.4

CVE-2023-4397

A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware vers...

Vulnerability Description

A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.

CVSS Score

4.4

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
ZyxelZld5.37
ZyxelAtp100-
ZyxelAtp100W-
ZyxelAtp200-
ZyxelAtp500-
ZyxelAtp700-
ZyxelAtp800-
ZyxelUsg Flex 100-
ZyxelUsg Flex 100W-
ZyxelUsg Flex 200-
ZyxelUsg Flex 50-
ZyxelUsg Flex 500-
ZyxelUsg Flex 50W-
ZyxelUsg Flex 700-
ZyxelUsg 20W-Vpn-
ZyxelVpn50W-

Related Weaknesses (CWE)

CWE-120

References

FAQ

What is CVE-2023-4397?

CVE-2023-4397 is a vulnerability with a CVSS score of 4.4 (MEDIUM). A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware vers...

How severe is CVE-2023-4397?

CVE-2023-4397 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-4397?

Check the references section above for vendor advisories and patch information. Affected products include: Zyxel Zld, Zyxel Atp100, Zyxel Atp100W, Zyxel Atp200, Zyxel Atp500.