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CVE-2022-0342 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml	CVE	Vendor Advisory
https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	[email protected]
CWE-287	Improper Authentication	[email protected]

Affected Products

Product	Versions
zyxel usg40 firmware	>= 4.20, < 4.71
CPE cpe:2.3:o:zyxel:usg40_firmware:::::::: Remediation No remediation found in references.
zyxel usg40	All versions
CPE cpe:2.3:h:zyxel:usg40:-:::::::* Remediation No remediation found in references.
zyxel usg40w firmware	>= 4.20, < 4.71
CPE cpe:2.3:o:zyxel:usg40w_firmware:::::::: Remediation No remediation found in references.
zyxel usg40w	All versions
CPE cpe:2.3:h:zyxel:usg40w:-:::::::* Remediation No remediation found in references.
zyxel usg60 firmware	>= 4.20, < 4.71
CPE cpe:2.3:o:zyxel:usg60_firmware:::::::: Remediation No remediation found in references.
zyxel usg60	All versions
CPE cpe:2.3:h:zyxel:usg60:-:::::::* Remediation No remediation found in references.
zyxel usg60w firmware	>= 4.20, < 4.71
CPE cpe:2.3:o:zyxel:usg60w_firmware:::::::: Remediation No remediation found in references.
zyxel usg60w	All versions
CPE cpe:2.3:h:zyxel:usg60w:-:::::::* Remediation No remediation found in references.
zyxel zywall 110 firmware	>= 4.20, < 4.71
CPE cpe:2.3:o:zyxel:zywall_110_firmware:::::::: Remediation No remediation found in references.
zyxel zywall 110	All versions
CPE cpe:2.3:h:zyxel:zywall_110:-:::::::* Remediation No remediation found in references.
zyxel zywall 310 firmware	>= 4.20, < 4.71
CPE cpe:2.3:o:zyxel:zywall_310_firmware:::::::: Remediation No remediation found in references.
zyxel zywall 310	All versions
CPE cpe:2.3:h:zyxel:zywall_310:-:::::::* Remediation No remediation found in references.
zyxel zywall 1100 firmware	>= 4.20, < 4.71
CPE cpe:2.3:o:zyxel:zywall_1100_firmware:::::::: Remediation No remediation found in references.
zyxel zywall 1100	All versions
CPE cpe:2.3:h:zyxel:zywall_1100:-:::::::* Remediation No remediation found in references.
zyxel usg flex 100 firmware	>= 4.50, <= 5.20
CPE cpe:2.3:o:zyxel:usg_flex_100_firmware:::::::: Remediation No remediation found in references.
zyxel usg flex 100	All versions
CPE cpe:2.3:h:zyxel:usg_flex_100:-:::::::* Remediation No remediation found in references.
zyxel usg flex 200 firmware	>= 4.50, <= 5.20
CPE cpe:2.3:o:zyxel:usg_flex_200_firmware:::::::: Remediation No remediation found in references.
zyxel usg flex 200	All versions
CPE cpe:2.3:h:zyxel:usg_flex_200:-:::::::* Remediation No remediation found in references.
zyxel usg flex 500 firmware	>= 4.50, <= 5.20
CPE cpe:2.3:o:zyxel:usg_flex_500_firmware:::::::: Remediation No remediation found in references.
zyxel usg flex 500	All versions
CPE cpe:2.3:h:zyxel:usg_flex_500:-:::::::* Remediation No remediation found in references.
zyxel usg flex 100w firmware	>= 4.50, <= 5.20
CPE cpe:2.3:o:zyxel:usg_flex_100w_firmware:::::::: Remediation No remediation found in references.
zyxel usg flex 100w	All versions
CPE cpe:2.3:h:zyxel:usg_flex_100w:-:::::::* Remediation No remediation found in references.
zyxel usg flex 700 firmware	>= 4.50, <= 5.20
CPE cpe:2.3:o:zyxel:usg_flex_700_firmware:::::::: Remediation No remediation found in references.
zyxel usg flex 700	All versions
CPE cpe:2.3:h:zyxel:usg_flex_700:-:::::::* Remediation No remediation found in references.
zyxel atp100 firmware	>= 4.32, <= 5.20
CPE cpe:2.3:o:zyxel:atp100_firmware:::::::: Remediation No remediation found in references.
zyxel atp100	All versions
CPE cpe:2.3:h:zyxel:atp100:-:::::::* Remediation No remediation found in references.
zyxel atp100w firmware	>= 4.32, <= 5.20
CPE cpe:2.3:o:zyxel:atp100w_firmware:::::::: Remediation No remediation found in references.
zyxel atp100w	All versions
CPE cpe:2.3:h:zyxel:atp100w:-:::::::* Remediation No remediation found in references.
zyxel atp200 firmware	>= 4.32, <= 5.20
CPE cpe:2.3:o:zyxel:atp200_firmware:::::::: Remediation No remediation found in references.
zyxel atp200	All versions
CPE cpe:2.3:h:zyxel:atp200:-:::::::* Remediation No remediation found in references.
zyxel atp500 firmware	>= 4.32, <= 5.20
CPE cpe:2.3:o:zyxel:atp500_firmware:::::::: Remediation No remediation found in references.
zyxel atp500	All versions
CPE cpe:2.3:h:zyxel:atp500:-:::::::* Remediation No remediation found in references.
zyxel atp700 firmware	>= 4.32, <= 5.20
CPE cpe:2.3:o:zyxel:atp700_firmware:::::::: Remediation No remediation found in references.
zyxel atp700	All versions
CPE cpe:2.3:h:zyxel:atp700:-:::::::* Remediation No remediation found in references.
zyxel atp800 firmware	>= 4.32, <= 5.20
CPE cpe:2.3:o:zyxel:atp800_firmware:::::::: Remediation No remediation found in references.
zyxel atp800	All versions
CPE cpe:2.3:h:zyxel:atp800:-:::::::* Remediation No remediation found in references.
zyxel vpn50 firmware	>= 4.30, < 5.21
CPE cpe:2.3:o:zyxel:vpn50_firmware:::::::: Remediation No remediation found in references.
zyxel vpn50	All versions
CPE cpe:2.3:h:zyxel:vpn50:-:::::::* Remediation No remediation found in references.
zyxel vpn100 firmware	>= 4.30, < 5.21
CPE cpe:2.3:o:zyxel:vpn100_firmware:::::::: Remediation No remediation found in references.
zyxel vpn100	All versions
CPE cpe:2.3:h:zyxel:vpn100:-:::::::* Remediation No remediation found in references.
zyxel vpn300 firmware	>= 4.30, < 5.21
CPE cpe:2.3:o:zyxel:vpn300_firmware:::::::: Remediation No remediation found in references.
zyxel vpn300	All versions
CPE cpe:2.3:h:zyxel:vpn300:-:::::::* Remediation No remediation found in references.
zyxel vpn1000 firmware	>= 4.30, < 5.21
CPE cpe:2.3:o:zyxel:vpn1000_firmware:::::::: Remediation No remediation found in references.
zyxel vpn1000	All versions
CPE cpe:2.3:h:zyxel:vpn1000:-:::::::* Remediation No remediation found in references.
zyxel nsg300 firmware	>= 1.20, < 1.33 1.33 - 1.33 p4
CPE cpe:2.3:o:zyxel:nsg300_firmware:::::::: cpe:2.3:o:zyxel:nsg300_firmware:1.33:-:::::: cpe:2.3:o:zyxel:nsg300_firmware:1.33:p4:::::: Remediation No remediation found in references.
zyxel nsg300	All versions
CPE cpe:2.3:h:zyxel:nsg300:-:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Apr 4, 2022	Initial Analysis	[email protected]

CVE-2022-0342 Details

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