CVE-2023-23585
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedExperion server DoS due to heap overflow occurring during the handling of a specially crafted message for a specific configuration operation. See Honeywell Security Notification for recommendations on upgrading and versioning.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceCVE-2023-23585 is a denial of service vulnerability in Honeywell Experion servers. The issue is a heap overflow condition that occurs when the server processes a specially crafted message targeting a specific configuration operation. Successful exploitation causes the server to crash or become unresponsive, disrupting industrial process control operations.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 501.1, <= 501.6hf8>= 510.1, <= 510.2hf12>= 511.1, <= 511.5tcu3>= 520.1, <= 520.1tcu4>= 520.2, <= 520.2tcu2>= 501.1, <= 501.6hf8>= 510.1, <= 510.2hf12>= 511.1, <= 511.5tcu3>= 520.1, <= 520.1tcu4>= 520.2, <= 520.2tcu2>= 510.1, <= 511.5tcu3>= 520.1, <= 520.1tcu4>= 520.2, <= 520.2tcu2>= 510.1, <= 511.5tcu3>= 520.1, <= 520.1tcu4>= 520.2, <= 520.2tcu2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Honeywell productCheck the installed software on the system to determine if it is Honeywell Experion Server, Experion Station, Engineering Station, or Direct Station. Look for Honeywell software in Programs and Features or check installed services.Affected if The product is one of: Experion Server, Experion Station, Engineering Station, or Direct Station
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Determine the product versionLocate the version information for the installed Honeywell product. This is typically found in the software's About dialog, in the Windows Programs and Features list, or in the Honeywell control system documentation.Affected if The version cannot be determined or is not explicitly listed
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Compare version against affected rangesMatch the installed version number to the following affected ranges: 501.1 to 501.6hf8, 510.1 to 510.2hf12, 511.1 to 511.5tcu3, 520.1 to 520.1tcu4, or 520.2 to 520.2tcu2. Use strict numeric or alphanumeric comparison based on your product's version format.Affected if The installed version falls within any of these ranges: 501.1-501.6hf8, 510.1-510.2hf12, 511.1-511.5tcu3, 520.1-520.1tcu4, or 520.2-520.2tcu2
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Verify network accessibility of management interfacesCheck if the Experion server or station management interfaces are exposed to the network. Review firewall rules, network segmentation, and access control lists to determine if the configuration operation interface can be reached remotely.Affected if The management or configuration interfaces are accessible from network segments other than trusted admin networks
The environment is affected if a Honeywell Experion product is running an affected version AND the vulnerable configuration operation interface is network-accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply the vendor-provided patch or upgrade to the corrected Experion version as specified in the Honeywell Security Notification. As a compensating control, restrict network access to Experion server management interfaces and limit which users can invoke the vulnerable configuration operation.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-23585 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-23585 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data