Is CVE-2023-6399 actively exploited?

CVE-2023-6399 has no public evidence of in-the-wild exploitation as of 2025-01-21.

What is the CVSS score for CVE-2023-6399?

CVE-2023-6399 has a CVSS score of 5.7 (MEDIUM severity). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2023-6399?

Patch guidance is available from zyxel security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-6399.

CVE-2023-6399 - remediation guidance & executive summary

Q: Which products are affected by CVE-2023-6399?

65 products: zyxel atp100 firmware, zyxel atp100 firmware, zyxel atp100 firmware, zyxel atp100w firmware, zyxel atp100w firmware, and 60 more.

Description

A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, and USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1 could allow an authenticated IPSec VPN user to cause DoS conditions against the “deviceid” daemon by sending a crafted hostname to an affected device if it has the “Device Insight” feature enabled.

CVSS Metrics

Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector: adjacent network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-134NVD-CWE-noinfo

Metadata

Primary Vendor: ZYXEL
Published: 2/20/2024
Last Modified: 1/21/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zyxel : atp100_firmwarezyxel : atp100_firmwarezyxel : atp100_firmwarezyxel : atp100w_firmwarezyxel : atp100w_firmwarezyxel : atp100w_firmwarezyxel : atp200_firmwarezyxel : atp200_firmwarezyxel : atp200_firmwarezyxel : atp500_firmwarezyxel : atp500_firmwarezyxel : atp500_firmwarezyxel : atp700_firmwarezyxel : atp700_firmwarezyxel : atp700_firmwarezyxel : atp800_firmwarezyxel : atp800_firmwarezyxel : atp800_firmwarezyxel : usg_flex_100_firmwarezyxel : usg_flex_100_firmwarezyxel : usg_flex_100_firmwarezyxel : usg_flex_100ax_firmwarezyxel : usg_flex_100ax_firmwarezyxel : usg_flex_100ax_firmwarezyxel : usg_flex_100h_firmwarezyxel : usg_flex_100h_firmwarezyxel : usg_flex_100h_firmwarezyxel : usg_flex_100w_firmwarezyxel : usg_flex_100w_firmwarezyxel : usg_flex_100w_firmwarezyxel : usg_flex_200_firmwarezyxel : usg_flex_200_firmwarezyxel : usg_flex_200_firmwarezyxel : usg_flex_200h_firmwarezyxel : usg_flex_200h_firmwarezyxel : usg_flex_200h_firmwarezyxel : usg_flex_200hp_firmwarezyxel : usg_flex_200hp_firmwarezyxel : usg_flex_200hp_firmwarezyxel : usg_flex_500_firmwarezyxel : usg_flex_500_firmwarezyxel : usg_flex_500_firmwarezyxel : usg_flex_500h_firmwarezyxel : usg_flex_500h_firmwarezyxel : usg_flex_500h_firmwarezyxel : usg_flex_700_firmwarezyxel : usg_flex_700_firmwarezyxel : usg_flex_700_firmwarezyxel : usg_flex_700h_firmwarezyxel : usg_flex_700h_firmwarezyxel : usg_flex_700h_firmwarezyxel : usg_flex_50_firmwarezyxel : usg_flex_50_firmwarezyxel : usg_flex_50_firmwarezyxel : usg_flex_50w_firmwarezyxel : usg_flex_50w_firmwarezyxel : usg_flex_50w_firmwarezyxel : usg20-vpn_firmwarezyxel : usg20-vpn_firmwarezyxel : usg20-vpn_firmwarezyxel : usg20w-vpn_firmwarezyxel : usg20w-vpn_firmwarezyxel : usg20w-vpn_firmwarezyxel : uoszyxel : uos

Remediation Guidance

Executive Summary

View on NIST NVD