description: The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36,  USG FLEX 50(W) series firmware versions 5.10 through 5.36,
USG20(W)-VPN series firmware versions 5.10 through 5.36, and VPN series firmware versions 5.00 through 5.36. An unauthenticated, LAN-based attacker could leverage the vulnerability to inject some operating system (OS) commands into the device configuration data on an affected device when the cloud management mode is enabled.
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: 5.10 through 5.36
}
{
defaultStatus: unaffected
product: USG FLEX series firmware
vendor: Zyxel
versions:
status: affected, version: 5.00 through 5.36
}
{
defaultStatus: unaffected
product: USG FLEX 50(W) series firmware
vendor: Zyxel
versions:
status: affected, version: 5.10 through 5.36
}
{
defaultStatus: unaffected
product: USG20(W)-VPN series firmware
vendor: Zyxel
versions:
status: affected, version: 5.10 through 5.36
}
{
defaultStatus: unaffected
product: VPN series firmware
vendor: Zyxel
versions:
status: affected, version: 5.00 through 5.36
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: HIGH
baseScore: 8.8
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL