CVE-2023-22916: Input Validation
The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware versions 5.10 through 5.35, USG20(W)-VPN firmware versions 5.10 through 5.35, and VPN series firmware versions 5.00 through 5.35, which fails to properly sanitize user input. A remote unauthenticated attacker could leverage the vulnerability to modify device configuration data, resulting in DoS conditions on an affected device if the attacker could trick an authorized administrator to switch the management mode to the cloud mode.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-22916?
The severity of CVE-2023-22916 is high.
Which Zyxel devices are affected by CVE-2023-22916?
Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware versions 5.10 through 5.35, USG20(W)-VPN firmware versions 5.10 through 5.35, and VPN series firmware versions 5.00 through 5.35 are affected by CVE-2023-22916.
How can I fix CVE-2023-22916?
To fix CVE-2023-22916, it is recommended to update the firmware of the affected Zyxel devices to versions higher than 5.35.
What is the Common Weakness Enumeration (CWE) ID for CVE-2023-22916?
The Common Weakness Enumeration (CWE) ID for CVE-2023-22916 is 20.
Where can I find more information about CVE-2023-22916?
You can find more information about CVE-2023-22916 at the following link: [https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps](https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps)