CVE-2023-6399

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 3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.65% probability · 49th percentile

CISA KEV

Not listed

Weakness

CWE-134

Affected

zyxel/atp100 firmware · zyxel/atp100w firmware · zyxel/atp200 firmware · zyxel/atp500 firmware · zyxel/atp700 firmware · zyxel/atp800 firmware · zyxel/usg flex 100 firmware · zyxel/usg flex 100ax firmware · zyxel/usg flex 100h firmware · zyxel/usg flex 100w firmware · zyxel/usg flex 200 firmware · zyxel/usg flex 200h firmware · zyxel/usg flex 200hp firmware · zyxel/usg flex 500 firmware · zyxel/usg flex 500h firmware · zyxel/usg flex 700 firmware · zyxel/usg flex 700h firmware · zyxel/usg flex 50 firmware · zyxel/usg flex 50w firmware · zyxel/usg20-vpn firmware · +2 more

Source

security@zyxel.com.tw

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.