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Vulnerability · Published Jun 5, 2024 · Assigned by ABB

CVE-2024-4009Replay Attack in KNX Secure Devices

Critical 9.2

In plain English

A critical-severity security flaw in 2.4! Display 55, SD/SD/U12.55.1-825 from ABB, Busch-Jaeger. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).

Severity (CVSS 3.1)9.2Critical
Exploit odds (30 days)0.1%top 96.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

VendorProductVersions
ABB, Busch-Jaeger 2.4! Display 55, SD/U12.55.11-825 1.00
ABB, Busch-Jaeger 2.4! Display 55, SD/SD/U12.55.1-825 1.00
ABB, Busch-Jaeger 2.4! Display 63, SD/U12.63.11-825 1.00
ABB, Busch-Jaeger RoomTouch 4", RT/U12.86.1-825 1.00
ABB, Busch-Jaeger RoomTouch 4", RT/U12.86.11-825 1.00
ABB, Busch-Jaeger 2,4'' Display 70, SD/U12.70.11-4015 1.00
ABB, Busch-Jaeger 2,4'' Display 70, SD-U12-70-1-4015 1.00
ABB, Busch-Jaeger RoomTouch 4", RT/U12.86.11-811 1.00
ABB, Busch-Jaeger RoomTouch 4", RT-U12-86-1-811 1.00
ABB, Busch-Jaeger BCU KNX, BA-U1.0.11 1.3.0.33
ABB, Busch-Jaeger BCU KNX, BA-U1.0.1 1.3.0.33
ABB, Busch-Jaeger BCU KNX, BA-U1.0.21 1.3.0.33

Weakness: CWE-294 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H

References