CVE-2024-4009
Replay Attack in KNX Secure Devices
HIGH
7.8
CVSS Score
Published: June 5, 2024 at 05:19 PM UTC
Updated: June 17, 2026 at 08:00 AM UTC
22 products affected across 2 vendors2tma310011b0001 Firmware2tma310011b0003 Firmware2tma310010b0003 Firmware
Using 2.4! Display 55, SD/U12.55.11-825 by ABB, Busch-Jaeger?
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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.02
Affected range stops below 1.02, so it looks safe — our inference, not a vendor statement
abb-2tma310010b0001 (same device)
v < 1.02
Affected range stops below 1.02, so it looks safe — our inference, not a vendor statement
abb-2tma310010b0003 (same device)
v < 1.02
Affected range stops below 1.02, so it looks safe — our inference, not a vendor statement
abb-2tma310011b0001 (same device)
v < 1.02
Affected range stops below 1.02, so it looks safe — our inference, not a vendor statement
abb-2tma310011b0002 (same device)
v < 1.02
Affected range stops below 1.02, so it looks safe — our inference, not a vendor statement
abb-2tma310011b0003 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (1)
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-294
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