CVE-2024-4009 CRITICAL

CVE-2024-4009: Replay Attack in KNX Secure Devices

Vendor Abb, Busch-Jaeger
Product 2.4! Display 55, SD/U12.55.11-825
Published June 5, 2024
Last update March 27, 2025
View on NVD All CVEs

CVSS base score

9.2/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Replay Attack in ABB, Busch-Jaeger, FTS Display (version 1.00) and BCU (version 1.3.0.33) allows attacker to capture/replay KNX telegram to local KNX Bus-System

Key dates

02Disclosure timeline

June 5, 2024 CVE published
March 27, 2025 Record updated