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CVE Record

CVE-2023-24474: Server deserialization missing boundary checks - heap overflow in communication between server and controller

Experion server may experience a DoS due to a heap overflow which could occur when handling a specially crafted message

HighCVSS 7.5Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This affects Honeywell Experion environments. A specially crafted network message may trigger a heap overflow in server/controller communications, potentially disrupting service. The bundle lists several Experion Server, Station, Engineering Station, and Direct Station versions as affected. No evidence in the bundle shows active exploitation or a named patch.

Executive priority

Treat this as a high-priority OT availability risk. The issue requires no privileges or user interaction over the network, but the provided evidence does not show active exploitation. Prioritize asset identification and vendor-guided remediation for exposed Experion systems.

Technical view

The issue is CWE-122 heap-based buffer overflow caused by missing boundary checks during server deserialization. Attack vector is network, low complexity, no privileges, no user interaction, unchanged scope. The public description says the Experion server may experience denial of service when handling a crafted message.

Likely exposure

Exposure is limited to listed Honeywell Experion products and versions: Experion Server, Experion Station, Engineering Station, and Direct Station. Risk is highest where these systems are reachable over networks that can send controller/server messages.

Exploitation context

The source bundle does not list CISA KEV status and provides no cited evidence of active exploitation. It describes a specially crafted message requirement but does not provide exploit availability, public proof of concept status, or observed attacks.

Researcher notes

The bundle has limited vendor detail: one Honeywell reference, affected product/version ranges, CWE-122, and CVSS 7.5. There is a notable tension between the description’s DoS wording and the CVSS vector showing high confidentiality impact with no availability impact; validate against vendor material.

Mitigation direction

  • Check Honeywell Process Solutions guidance for supported fixes or workarounds.
  • Inventory listed Experion products and versions across OT environments.
  • Prioritize remediation for network-reachable affected systems.
  • Restrict untrusted network paths to Experion server/controller communication channels.
  • Monitor affected environments for crashes or abnormal service interruptions.

Validation and detection

  • Confirm whether deployed versions match the affected version list.
  • Map network reachability to Experion server and controller communication paths.
  • Review vendor advisories for fixed versions or official mitigations.
  • Check operational logs for unexplained Experion service crashes.
  • Document compensating controls where patch status is unknown.
Prepared
Confidence
medium
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-122: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-24474 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2023-24474Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
HoneywellExperion Server501.1, 510.1, 511.1, 520.1, 520.2unaffected
HoneywellExperion Station501.1, 510.1, 511.1, 520.1, 520.2unaffected
HoneywellEngineering Station510.1, 520.1, 520.2unaffected
HoneywellDirect Station510.5, 520.1, 520.2unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-122 · source CWE mapping

Heap-based Buffer Overflow

Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.