CVE-2023-38405Network attack vector

Unauthenticated device crash via BACnet infinite loop

Published Jul 17, 2023 · Updated Oct 31, 2024

Denial of service in Crestron 3-Series Control Systems before 1.8001.0187 allows remote attackers to crash devices via BACnet. A specifically crafted BACnet packet drives the BACnet handling path into an infinite loop, causing the control system to crash. The flaw is reachable without authentication over the network only when BACnet is in use, and the reported consequence is a device crash.

CVSS severity7.5
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Crestron 3-Series Control Systems before 1.8001.0187 allows remote attackers to crash devices via BACnet. A specifically crafted BACnet packet drives the BACnet handling path into an infinite loop, causing the control system to crash. The flaw is reachable without authentication over the network only when BACnet is in use, and the reported consequence is a device crash.

The record

CVE
CVE-2023-38405
Published
Jul 17, 2023
Updated
Oct 31, 2024
Vendor
Crestron Electronics
Product
3-Series Control Systems
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1.8001.0187

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Crestron Electronics · 3-Series Control Systemsversion=1.8001.0187

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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