CVE-2023-6399 — MEDIUM (5.7)

Q: How severe is CVE-2023-6399?

CVE-2023-6399 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2023-6399?

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

Vulnerability 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 Score

5.7

MEDIUM

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Zyxel	Atp100 Firmware	>= 5.10, < 5.37
Zyxel	Atp100	-
Zyxel	Atp100W Firmware	>= 5.10, < 5.37
Zyxel	Atp100W	-
Zyxel	Atp200 Firmware	>= 5.10, < 5.37
Zyxel	Atp200	-
Zyxel	Atp500 Firmware	>= 5.10, < 5.37
Zyxel	Atp500	-
Zyxel	Atp700 Firmware	>= 5.10, < 5.37
Zyxel	Atp700	-
Zyxel	Atp800 Firmware	>= 5.10, < 5.37
Zyxel	Atp800	-
Zyxel	Usg Flex 100 Firmware	>= 5.10, < 5.37
Zyxel	Usg Flex 100	-
Zyxel	Usg Flex 100Ax Firmware	>= 5.10, < 5.37
Zyxel	Usg Flex 100Ax	-
Zyxel	Usg Flex 100H Firmware	>= 5.10, < 5.37
Zyxel	Usg Flex 100H	-
Zyxel	Usg Flex 100W Firmware	>= 5.10, < 5.37
Zyxel	Usg Flex 100W	-

Related Weaknesses (CWE)

CWE-134

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisVendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisVendor Advisory

FAQ

What is CVE-2023-6399?

CVE-2023-6399 is a vulnerability with a CVSS score of 5.7 (MEDIUM). 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 ver...

How severe is CVE-2023-6399?

CVE-2023-6399 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-6399?

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