Improper Privilege Management in ZyXEL Communications Corp. products - CVE-2023-5797

Vulnerability identifier: #VU83523

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-5797

CWE-ID: CWE-269

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to improper privilege management in the debug CLI command. A local user can access the administrator’s logs on the target device.

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

Install updates from vendor's website.

ATP series - update to 5.37 Patch 1
USG FLEX series - update to 5.37 Patch 1
USG FLEX 50W - update to 5.37 Patch 1
VPN series - update to 5.37 Patch 1
USG20W-VPN - update to 5.37 Patch 1

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

• Multiple vulnerabilities in Zyxel firewalls and APs