NVD

CVE-2021-35029 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

CNA: Zyxel Corporation

Base Score: 9.8 CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 7.5 HIGH

Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml	Vendor Advisory
https://www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	NIST Zyxel Corporation

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Initial Analysis by NIST 7/08/2021 2:20:48 PM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added	CWE		NIST CWE-287
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg1000_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg1000:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg100_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg1100_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg1100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg110_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg110:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg1900_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg1900:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg20-vpn_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg20-vpn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg2000_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg2000:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg200_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg200:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg20_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg20:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg20w-vpn_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg20w-vpn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg20w_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg20w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg210_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg210:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg2200-vpn_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg2200-vpn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg300_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg300:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg310_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg310:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg40_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg40:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg40w_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg40w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg50_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg50:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg60_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg60:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg60w_firmware::::::::* versions from (including) 4.35 up to (including) 4.64 OR cpe:2.3:h:zyxel:usg60w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_100_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg_flex_100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_100w_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg_flex_100w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_200_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg_flex_200:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_500_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg_flex_500:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:usg_flex_700_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:usg_flex_700:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_1100_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_1100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_110_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_110:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_310_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_310:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_atp100_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_atp100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_atp100w_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_atp100w:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_atp200_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_atp200:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_atp500_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_atp500:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_atp700_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_atp700:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_atp800_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_atp800:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_vpn100_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_vpn100:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_vpn300_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_vpn300:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:zyxel:zywall_vpn50_firmware::::::::* versions from (including) 4.35 up to (including) 5.01 OR cpe:2.3:h:zyxel:zywall_vpn50:-:::::::*
Changed	Reference Type	https://www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml No Types Assigned	https://www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-35029
NVD Published Date:
07/02/2021
NVD Last Modified:
11/21/2024
Source:
Zyxel Corporation

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National Vulnerability Database