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CVE-2022-0342

Published: Mar 28, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-287
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
84.8%
Top 0.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-287

Affected Products

USG/ZyWALL series firmwareZyxelNetworking Infrastructure
USG FLEX series firmwareZyxelNetworking Infrastructure
ATP series firmwareZyxelNetworking Infrastructure
VPN series firmwareZyxelNetworking Infrastructure
NSG series firmwareZyxelNetworking Infrastructure
zyxelcommercialTWNetworking Infrastructureaka zyxel communications corp.
and 29 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml
zyxel.com
https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml
zyxel.com
https://vuldb.com/?id.195897
vuldb.com
and 1 more references View all →

Timeline

Published
Mar 28, 2022
Last Updated
Nov 21, 2024

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