CVE-2023-35136: Input Validation
An improper input validation vulnerability in the “Quagga” package of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an authenticated local attacker to access configuration files on an affected device.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2023-35136?
CVE-2023-35136 is an improper input validation vulnerability in the “Quagga” package of the Zyxel ATP series firmware.
Which Zyxel products are affected by CVE-2023-35136?
The Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, and USG20(W)-VPN series firmware versions 4.16 through 5.37 are affected by CVE-2023-35136.
What is the severity of CVE-2023-35136?
CVE-2023-35136 has a severity rating of medium with a CVSS score of 5.5.
How can I fix CVE-2023-35136?
To fix CVE-2023-35136, update the firmware of the affected Zyxel products to versions 5.37 (for ATP series), 5.37 (for USG FLEX series), 5.37 (for USG FLEX 50(W) series), or 5.37 (for USG20(W)-VPN series).
Where can I find more information about CVE-2023-35136?
You can find more information about CVE-2023-35136 in the Zyxel Security Advisory for Multiple Vulnerabilities in Firewalls and APs.