CVE-2020-29583

Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges.
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
mitreCNA
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CVEADP
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CISA-ADPADP
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 99%
VendorProductVersion
zyxelusg20-vpn_firmware
4.60
zyxelusg20w-vpn_firmware
4.60
zyxelusg40_firmware
4.60
zyxelusg40w_firmware
4.60
zyxelusg60_firmware
4.60
zyxelusg60w_firmware
4.60
zyxelusg110_firmware
4.60
zyxelusg210_firmware
4.60
zyxelusg310_firmware
4.60
zyxelusg1100_firmware
4.60
zyxelusg1900_firmware
4.60
zyxelusg2200_firmware
4.60
zyxelzywall110_firmware
4.60
zyxelzywall310_firmware
4.60
zyxelzywall1100_firmware
4.60
zyxelatp100_firmware
4.60
zyxelatp100w_firmware
4.60
zyxelatp200_firmware
4.60
zyxelatp500_firmware
4.60
zyxelatp700_firmware
4.60
zyxelatp800_firmware
4.60
zyxelvpn50_firmware
4.60
zyxelvpn100_firmware
4.60
zyxelvpn300_firmware
4.60
zyxelvpn1000_firmware
4.60
zyxelusg_flex_100_firmware
4.60
zyxelusg_flex_100w_firmware
4.60
zyxelusg_flex_200_firmware
4.60
zyxelusg_flex_500_firmware
4.60
zyxelusg_flex_700_firmware
4.60
𝑥
= Vulnerable software versions