CVE-2023-23585Network attack vector

Unauthenticated server crash via crafted configuration message

Published Jul 13, 2023 · Updated Mar 5, 2025

A heap overflow in affected Honeywell Experion releases allows remote attackers to crash server services via a crafted configuration message. During a specific configuration operation, the server writes attacker-controlled message data beyond its allocated heap buffer. No authentication or user interaction is required, but public records do not identify the protocol, port, or affected process.

CVSS severity9.8
Critical
EPSS probability0.65%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A heap overflow in affected Honeywell Experion releases allows remote attackers to crash server services via a crafted configuration message. During a specific configuration operation, the server writes attacker-controlled message data beyond its allocated heap buffer. No authentication or user interaction is required, but public records do not identify the protocol, port, or affected process.

The record

CVE
CVE-2023-23585
Published
Jul 13, 2023
Updated
Mar 5, 2025
Vendor
Honeywell Technologies
Product
Experion Server
Classifications
CWE-787, CAPEC-100, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=501.1 <=501.6HF8
  2. Affected versionversion=510.1 <=510.2HF12
  3. Affected versionversion=511.1 <=511.5TCU3
  4. Affected versionversion=520.1 <=520.1TCU4
  5. Affected versionversion=520.2 <=520.2TCU2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Honeywell Technologies · Experion Serverversion=501.1 <=501.6HF8; version=510.1 <=510.2HF12; version=511.1 <=511.5TCU3; version=520.1 <=520.1TCU4; version=520.2 <=520.2TCU2
Honeywell Technologies · Experion Stationversion=501.1 <=501.6HF8; version=510.1 <=510.2HF12; version=511.1 <=511.5TCU3; version=520.1 <=520.1TCU4; version=520.2 <=520.2TCU2
Honeywell Technologies · Engineering Stationversion=510.1 <=511.5TCU3; version=520.1 <=520.1TCU4; version=520.2 <=520.2TCU2
Honeywell Technologies · Direct Stationversion=510.5 <=511.5TCU3; version=520.1 <=520.1TCU4; version=520.2 <=520.2TCU2

Published CVSS scores

9.8HoneywellCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-787Out-of-bounds Write
CAPEC-100Overflow Buffers
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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