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Vulnerability record · CVE-2021-22291 · published 7 October 2025

CVE-2021-22291: Cross-site scripting vulnerability

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in ABB EIBPORT V3 KNX, ABB EIBPORT V3 KNX GSM.This issue affects EIBPORT V3 KNX: before 3.9.2; EIBPORT V3 KNX GSM: before 3.9.2.

8.5 CVSS 4.0 High EPSS 0.32% · top 78.0% CWE-79 · Cross-site scripting Deferred
8.5CVSS 4.0 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in ABB EIBPORT V3 KNX, ABB EIBPORT V3 KNX GSM.This issue affects EIBPORT V3 KNX: before 3.9.2; EIBPORT V3 KNX GSM: before 3.9.2.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://search.abb.com/library/Download.aspx?DocumentID=9AKK108471A7808&LanguageCode=en&DocumentPartId=pdf&Action=Launch

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

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Source: NIST National Vulnerability Database (record CVE-2021-22291), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.