CVE-2023-6399

🗓️ 20 Feb 2024 02:15:49Reported by [email protected]Type

nvd🔗 web.nvd.nist.gov👁 43 Views

A format string vulnerability in Zyxel ATP, USG FLEX, and USG FLEX 50(W) series firmware versions allows authenticated IPSec VPN user to cause DoS conditions by sending a crafted hostname

Reporter	Title	Published	Views	Family All 12
BDU FSTEC	Device Insight DoS	29 Feb 202400:00	–	bdu_fstec
Circl	CVE-2023-6399	20 Feb 202403:31	–	circl
CNNVD	Zyxel ATP Formatting String Error Vulnerability	20 Feb 202400:00	–	cnnvd
CVE	CVE-2023-6399	20 Feb 202401:42	–	cve
Cvelist	CVE-2023-6399	20 Feb 202401:42	–	cvelist
EUVD	EUVD-2023-58636	3 Oct 202520:07	–	euvd
osv_cve	CVE-2023-6399	20 Feb 202402:15	–	osv_cve
Prion	Format string	20 Feb 202402:15	–	prion
Positive Technologies	PT-2023-8709 · Zyxel · Zyxel Usg Flex Series +3	30 Nov 202300:00	–	ptsecurity
Rapid7 Vulnerability Database (full)	CVE-2023-6399: Use of Externally-Controlled Format String	20 Feb 202400:00	–	rapid7

NVD

Node

AND

OR

zyxel atp100_firmwareRange5.10–5.37

zyxel atp100_firmwareMatch5.37-

zyxel atp100_firmwareMatch5.37patch1

zyxel atp100Match-

Node

AND

OR

zyxel atp100w_firmwareRange5.10–5.37

zyxel atp100w_firmwareMatch5.37-

zyxel atp100w_firmwareMatch5.37patch1

zyxel atp100wMatch-

Node

AND

OR

zyxel atp200_firmwareRange5.10–5.37

zyxel atp200_firmwareMatch5.37-

zyxel atp200_firmwareMatch5.37patch1

zyxel atp200Match-

Node

AND

OR

zyxel atp500_firmwareRange5.10–5.37

zyxel atp500_firmwareMatch5.37-

zyxel atp500_firmwareMatch5.37patch1

zyxel atp500Match-

Node

AND

OR

zyxel atp700_firmwareRange5.10–5.37

zyxel atp700_firmwareMatch5.37-

zyxel atp700_firmwareMatch5.37patch1

zyxel atp700Match-

Node

AND

OR

zyxel atp800_firmwareRange5.10–5.37

zyxel atp800_firmwareMatch5.37-

zyxel atp800_firmwareMatch5.37patch1

zyxel atp800Match-

Node

AND

OR

zyxel usg_flex_100_firmwareRange5.10–5.37

zyxel usg_flex_100_firmwareMatch5.37-

zyxel usg_flex_100_firmwareMatch5.37patch1

zyxel usg_flex_100Match-

Node

AND

OR

zyxel usg_flex_100ax_firmwareRange5.10–5.37

zyxel usg_flex_100ax_firmwareMatch5.37-

zyxel usg_flex_100ax_firmwareMatch5.37patch1

zyxel usg_flex_100axMatch-

Node

AND

OR

zyxel usg_flex_100h_firmwareRange5.10–5.37

zyxel usg_flex_100h_firmwareMatch5.37-

zyxel usg_flex_100h_firmwareMatch5.37patch1

zyxel usg_flex_100hMatch-

Node

AND

OR

zyxel usg_flex_100w_firmwareRange5.10–5.37

zyxel usg_flex_100w_firmwareMatch5.37-

zyxel usg_flex_100w_firmwareMatch5.37patch1

zyxel usg_flex_100wMatch-

Node

AND

OR

zyxel usg_flex_200_firmwareRange5.10–5.37

zyxel usg_flex_200_firmwareMatch5.37-

zyxel usg_flex_200_firmwareMatch5.37patch1

zyxel usg_flex_200Match-

Node

AND

OR

zyxel usg_flex_200h_firmwareRange5.10–5.37

zyxel usg_flex_200h_firmwareMatch5.37-

zyxel usg_flex_200h_firmwareMatch5.37patch1

zyxel usg_flex_200hMatch-

Node

AND

OR

zyxel usg_flex_200hp_firmwareRange5.10–5.37

zyxel usg_flex_200hp_firmwareMatch5.37-

zyxel usg_flex_200hp_firmwareMatch5.37patch1

zyxel usg_flex_200hpMatch-

Node

AND

OR

zyxel usg_flex_500_firmwareRange5.10–5.37

zyxel usg_flex_500_firmwareMatch5.37-

zyxel usg_flex_500_firmwareMatch5.37patch1

zyxel usg_flex_500Match-

Node

AND

OR

zyxel usg_flex_500h_firmwareRange5.10–5.37

zyxel usg_flex_500h_firmwareMatch5.37-

zyxel usg_flex_500h_firmwareMatch5.37patch1

zyxel usg_flex_500hMatch-

Node

AND

OR

zyxel usg_flex_700_firmwareRange5.10–5.37

zyxel usg_flex_700_firmwareMatch5.37-

zyxel usg_flex_700_firmwareMatch5.37patch1

zyxel usg_flex_700Match-

Node

AND

OR

zyxel usg_flex_700h_firmwareRange5.10–5.37

zyxel usg_flex_700h_firmwareMatch5.37-

zyxel usg_flex_700h_firmwareMatch5.37patch1

zyxel usg_flex_700hMatch-

Node

AND

OR

zyxel usg_flex_50_firmwareRange5.10–5.37

zyxel usg_flex_50_firmwareMatch5.37-

zyxel usg_flex_50_firmwareMatch5.37patch1

zyxel usg_flex_50Match-

Node

AND

OR

zyxel usg_flex_50w_firmwareRange5.10–5.37

zyxel usg_flex_50w_firmwareMatch5.37-

zyxel usg_flex_50w_firmwareMatch5.37patch1

zyxel usg_flex_50wMatch-

Node

AND

OR

zyxel usg20-vpn_firmwareRange5.10–5.37

zyxel usg20-vpn_firmwareMatch5.37-

zyxel usg20-vpn_firmwareMatch5.37patch1

zyxel usg20-vpnMatch-

Node

AND

OR

zyxel usg20w-vpn_firmwareRange5.10–5.37

zyxel usg20w-vpn_firmwareMatch5.37-

zyxel usg20w-vpn_firmwareMatch5.37patch1

zyxel usg20w-vpnMatch-

Node

AND

OR

zyxel uosMatch1.10-

zyxel uosMatch1.10patch1

OR

zyxel usg_flex_100hMatch-

zyxel usg_flex_100hpMatch-

zyxel usg_flex_200hMatch-

zyxel usg_flex_200hpMatch-

zyxel usg_flex_500hMatch-

zyxel usg_flex_700hMatch-

Source	Link
zyxel	www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024

17 Jun 2026 06:50Current

5.4Medium risk

Vulners AI Score5.4

CVSS 3.15.7 - 6.5

EPSS0.00649

SSVC

zyxel atp usg flex format string vulnerability dos ipsec vpn