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Vulnerability record · CVE-2021-31521 · published 17 June 2021

CVE-2021-31521: Trendmicro interscan web security virtual appliance cross-site scripting vulnerability

Trendmicro · Interscan Web Security Virtual Appliance

Trend Micro InterScan Web Security Virtual Appliance version 6.5 was found to have a reflected cross-site scripting (XSS) vulnerability in the product's Captive Portal.

5.4 CVSS 3.1 Medium EPSS 1.4% · top 28.6% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score, v2 3.5
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Trend Micro InterScan Web Security Virtual Appliance version 6.5 was found to have a reflected cross-site scripting (XSS) vulnerability in the product's Captive Portal.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://success.trendmicro.com/solution/000286452 PatchVendor Advisory
https://success.trendmicro.com/solution/000286452 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2016-9269Trendmicro interscan web security virtual appliance permissions and access controls vulnerabilityRemote Command Execution in com.trend.iwss.gui.servlet.ManagePatches in Trend Micro Interscan Web Security Virtual Appliance (IWSVA) version 6.5-SP2_…EPSS 13%9.8CVE-2020-8465Trendmicro interscan web security virtual appliance improper authentication vulnerabilityA vulnerability in Trend Micro InterScan Web Security Virtual Appliance 6.5 SP2 could allow an attacker to manipulate system updates using a combinat…EPSS 2.7%9.8CVE-2020-8466Trend Micro InterScan Web Security Virtual Appliance command injection via passwordTrend Micro InterScan Web Security Virtual Appliance 6.5 SP2 with improved password hashing enabled contains an OS command injection flaw (CWE-78). A…EPSS 64%analysed9.8CVE-2020-28578Trend Micro InterScan Web Security Virtual Appliance out-of-bounds write RCETrend Micro InterScan Web Security Virtual Appliance 6.5 SP2 contains an out-of-bounds write (CWE-787) reachable through a specially crafted HTTP mes…EPSS 73%analysed9.8CVE-2020-8606Trend Micro InterScan Web Security Virtual Appliance authentication bypassTrend Micro InterScan Web Security Virtual Appliance 6.5 contains an improper authentication flaw (CWE-287) that lets remote attackers bypass authent…EPSS 73%analysed8.8CVE-2020-8461Trendmicro interscan web security virtual appliance cross-site request forgery vulnerabilityA CSRF protection bypass vulnerability in Trend Micro InterScan Web Security Virtual Appliance 6.5 SP2 could allow an attacker to get a victim's brow…EPSS 1.2%8.8CVE-2020-28579Trend Micro InterScan Web Security Virtual Appliance out-of-bounds write RCETrend Micro InterScan Web Security Virtual Appliance 6.5 SP2 contains an out-of-bounds write (CWE-787) reachable through a specially crafted HTTP mes…EPSS 51%analysed8.8CVE-2020-8605Trend Micro InterScan Web Security Virtual Appliance OS command injection RCETrend Micro InterScan Web Security Virtual Appliance 6.5 contains an OS command injection flaw (CWE-78) that lets a remote attacker run arbitrary cod…EPSS 88%analysed

Source: NIST National Vulnerability Database (record CVE-2021-31521), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.