Improper Check for Unusual or Exceptional Conditions in ZyXEL Communications Corp. products - CVE-2022-45854

Vulnerability identifier: #VU71973

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-45854

CWE-ID: CWE-754

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.

NWA110AX
NWA210AX
WAX510D
WAX610D
WAX650S
WAX630S

Install updates from vendor's website.

NWA110AX - update to 6.50(ABTG.0)C0
NWA210AX - update to 6.50(ABTD.0)C0
WAX510D - update to 6.50(ABTF.0)C0
WAX610D - update to 6.50(ABTE.0)C0
WAX630S - update to 6.50(ABZD.0)C0
WAX650S - update to 6.50(ABRM.0)C0

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dos-vulnerability-of-aps

• Denial of service in Zyxel products