CVE-2022-0342

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
ZyxelCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 99%
VendorProductVersion
zyxelusg40_firmware
4.20 ≤
𝑥
< 4.71
zyxelusg40w_firmware
4.20 ≤
𝑥
< 4.71
zyxelusg60_firmware
4.20 ≤
𝑥
< 4.71
zyxelusg60w_firmware
4.20 ≤
𝑥
< 4.71
zyxelzywall_110_firmware
4.20 ≤
𝑥
< 4.71
zyxelzywall_310_firmware
4.20 ≤
𝑥
< 4.71
zyxelzywall_1100_firmware
4.20 ≤
𝑥
< 4.71
zyxelusg_flex_100_firmware
4.50 ≤
𝑥
≤ 5.20
zyxelusg_flex_200_firmware
4.50 ≤
𝑥
≤ 5.20
zyxelusg_flex_500_firmware
4.50 ≤
𝑥
≤ 5.20
zyxelusg_flex_100w_firmware
4.50 ≤
𝑥
≤ 5.20
zyxelusg_flex_700_firmware
4.50 ≤
𝑥
≤ 5.20
zyxelatp100_firmware
4.32 ≤
𝑥
≤ 5.20
zyxelatp100w_firmware
4.32 ≤
𝑥
≤ 5.20
zyxelatp200_firmware
4.32 ≤
𝑥
≤ 5.20
zyxelatp500_firmware
4.32 ≤
𝑥
≤ 5.20
zyxelatp700_firmware
4.32 ≤
𝑥
≤ 5.20
zyxelatp800_firmware
4.32 ≤
𝑥
≤ 5.20
zyxelvpn50_firmware
4.30 ≤
𝑥
< 5.21
zyxelvpn100_firmware
4.30 ≤
𝑥
< 5.21
zyxelvpn300_firmware
4.30 ≤
𝑥
< 5.21
zyxelvpn1000_firmware
4.30 ≤
𝑥
< 5.21
zyxelnsg300_firmware
1.20 ≤
𝑥
< 1.33
zyxelnsg300_firmware
1.33
zyxelnsg300_firmware
1.33:p4
𝑥
= Vulnerable software versions