#VU86621 OS Command Injection in ZyXEL Communications Corp. products - CVE-2023-6398

Vulnerability identifier: #VU86621

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2023-6398

CWE-ID: CWE-78

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
ATP series
USG FLEX series
USG FLEX 50W
USG20W-VPN
NWA110AX
NWA210AX
NWA1123ACv3
WAC500
WAC500H
WAX510D
WAX610D
WAX650S
NWA50AX-PRO
NWA90AX-PRO
NWA50AX
NWA55AXE
NWA90AX
NWA220AX-6E
WAX300H
WAX620D-6E
WAX630S
WAX640S-6E
WAX655E
WBE660S

Software vendor:
ZyXEL Communications Corp.

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the file upload binary. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Install updates from vendor's website.

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