CVE-2022-0342

Description

An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 91.86% Top 5%
Vendor Advisory zyxel.com
Affected: Zyxel USG/ZyWALL series firmware
Affected: Zyxel USG FLEX series firmware
Affected: Zyxel ATP series firmware
Affected: Zyxel VPN series firmware
Affected: Zyxel NSG series firmware
Published at:
Updated at:

References

Link Tags
https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-0342?
CVE-2022-0342 has been scored as a critical severity vulnerability.
How to fix CVE-2022-0342?
To fix CVE-2022-0342, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-0342 being actively exploited in the wild?
It is possible that CVE-2022-0342 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~92% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-0342?
CVE-2022-0342 affects Zyxel USG/ZyWALL series firmware, Zyxel USG FLEX series firmware, Zyxel ATP series firmware, Zyxel VPN series firmware, Zyxel NSG series firmware.
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