description: A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.
problem types: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
affected:
{
vendor: Zyxel
product: ZyWALL/USG series firmware
versions:
version: 4.30 through 4.72, status: affected
}
{
vendor: Zyxel
product: VPN series firmware
versions:
version: 4.30 through 5.31, status: affected
}
{
vendor: Zyxel
product: USG FLEX series firmware
versions:
version: 4.50 through 5.31, status: affected
}
{
vendor: Zyxel
product: ATP series firmware
versions:
version: 4.32 through 5.31, status: affected
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: CHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: NONE
baseScore: 4.7
baseSeverity: MEDIUM
]