description: A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1,
USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1,
NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.
problem types: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
affected:
{
defaultStatus: unaffected
product: ATP series firmware
vendor: Zyxel
versions:
status: affected, version: version 4.32 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product: USG FLEX series firmware
vendor: Zyxel
versions:
status: affected, version: version 4.50 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product: USG FLEX 50(W) series firmware
vendor: Zyxel
versions:
status: affected, version:  version 4.16 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product: USG20(W)-VPN series firmware
vendor: Zyxel
versions:
status: affected, version: version 4.16 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product:  NWA50AX firmware
vendor: Zyxel
versions:
status: affected, version: < 6.29(ABYW.4)
}
{
defaultStatus: unaffected
product:  WAC500 firmware
vendor: Zyxel
versions:
status: affected, version: < 6.70(ABVS.1)
}
{
defaultStatus: unaffected
product: WAX300H firmware
vendor: Zyxel
versions:
status: affected, version: < 6.70(ACHF.1)
}
{
defaultStatus: unaffected
product: WBE660S firmware
vendor: Zyxel
versions:
status: affected, version: < 6.70(ACGG.1)
}
{
defaultStatus: unaffected
product: USG FLEX H series firmware
vendor: Zyxel
versions:
status: affected, version: version 1.10 through 1.10 Patch 1
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.2
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL