Published: 2021-06-15

Patch availableYES
Number of vulnerabilities1
CVE IDCVE-2021-31521
Exploitation vectorNetwork
Public exploitN/A
Vulnerable software
InterScan Web Security Virtual Appliance
Server applications / Server solutions for antivurus protection


Security Advisory

This security advisory describes one medium risk vulnerability.

1) Cross-site scripting

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2021-31521

CWE-ID: CWE-79 – Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’)

Exploit availability: No Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within the Captive Portal. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user’s browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks. Mitigation

Install updates from vendor’s website.Vulnerable software versions

InterScan Web Security Virtual Appliance: before 6.5 SP2 CP1943CPE

  • cpe:2.3:a:trend_micro:interscan_web_security_virtual_appliance:*:*:*:*:*:*:*:*