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[email protected]CVE-2021-35029

HistoryJul 02, 2021 - 11:15 a.m.

CVE-2021-35029

2021-07-0211:15:00

CWE-287

[email protected]

web.nvd.nist.gov

cve-2021-35029

authentication bypass

zyxel

usg

zywall

firmware

vulnerability

remote execution

nvd

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.7 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.007 Low

EPSS

Percentile

80.2%

JSON

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.

CPENameOperatorVersion
zyxel:usg1900_firmwarezyxel usg1900 firmwarele4.64
zyxel:usg1100_firmwarezyxel usg1100 firmwarele4.64
zyxel:usg310_firmwarezyxel usg310 firmwarele4.64
zyxel:usg210_firmwarezyxel usg210 firmwarele4.64
zyxel:usg110_firmwarezyxel usg110 firmwarele4.64
zyxel:usg40_firmwarezyxel usg40 firmwarele4.64
zyxel:usg40w_firmwarezyxel usg40w firmwarele4.64
zyxel:usg60_firmwarezyxel usg60 firmwarele4.64
zyxel:usg60w_firmwarezyxel usg60w firmwarele4.64
zyxel:usg300_firmwarezyxel usg300 firmwarele4.64

CPE	Name	Operator	Version
zyxel:usg1900_firmware	zyxel usg1900 firmware	le	4.64
zyxel:usg1100_firmware	zyxel usg1100 firmware	le	4.64
zyxel:usg310_firmware	zyxel usg310 firmware	le	4.64
zyxel:usg210_firmware	zyxel usg210 firmware	le	4.64
zyxel:usg110_firmware	zyxel usg110 firmware	le	4.64
zyxel:usg40_firmware	zyxel usg40 firmware	le	4.64
zyxel:usg40w_firmware	zyxel usg40w firmware	le	4.64
zyxel:usg60_firmware	zyxel usg60 firmware	le	4.64
zyxel:usg60w_firmware	zyxel usg60w firmware	le	4.64
zyxel:usg300_firmware	zyxel usg300 firmware	le	4.64

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References

www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml

Social References

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.7 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.007 Low

EPSS

Percentile

80.2%

JSON

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