CVE-2021-22291: EIBPORT Reflected XSS

Published Oct 7, 2025
·
Updated

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.

Affected Software

2 affected components
ABB EIBPORT V3 KNX<3.9.2
ABB EIBPORT V3 KNX GSM<3.9.2

Event History

Oct 7, 2025
CVE Published
via MITRE·01:29 PM
Data Sourced
via MITRE·01:29 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2021-22291?

CVE-2021-22291 is classified as a medium severity vulnerability due to improper neutralization of input during web page generation, leading to potential cross-site scripting (XSS) attacks.

2

How do I fix CVE-2021-22291?

To mitigate CVE-2021-22291, upgrade to ABB EIBPORT V3 KNX version 3.9.2 or later.

3

Which products are affected by CVE-2021-22291?

CVE-2021-22291 affects ABB EIBPORT V3 KNX and ABB EIBPORT V3 KNX GSM, both versions prior to 3.9.2.

4

What kind of attacks can CVE-2021-22291 allow?

CVE-2021-22291 can allow attackers to execute malicious scripts in the context of a user's browser session, facilitating cross-site scripting (XSS) attacks.

5

When was CVE-2021-22291 discovered?

CVE-2021-22291 was publicly disclosed in 2021, emphasizing the need for immediate attention to affected versions.

Contact

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