CVE-2021-22291 PUBLISHED

EIBPORT Reflected XSS

Assigner: ABB
Reserved: 05.01.2021 Published: 07.10.2025 Updated: 07.10.2025

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 Vector: 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
CVSS Score: 8.5

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	Active

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	ABB
Product	EIBPORT V3 KNX
Versions	Default: unaffected affected from 0 to 3.9.2 (excl.)

Vendor	ABB
Product	EIBPORT V3 KNX GSM
Versions	Default: unaffected affected from 0 to 3.9.2 (excl.)

Credits

ABB acknowledges and thanks Psytester for responsibly disclosing the vulnerabilities and helping to verify the resolving implementation. finder

References

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

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') CWE