CVE-2023-5406

mediumpriority · track · 0EPSS 0.007 · 53 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.69% (53rd) EPSS

CVSS 5.9 · medium

Is it mine?

34 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cisa_csaf_ot

EPSS · scored 2026-10-27

Server communication with a controller can lead to remote code execution using a specially crafted message from the controller. See Honeywell Security Notification for recommendations on upgrading and versioning.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationExperion LXcisa_csaf_ot
Honeywell fixed the reported issues and advises users to upgrade to version referenced in the Security Notice or CVE record.
https://process.honeywell.com/us/en/support/technical-publication?search=SN2024
MitigationExperion PKScisa_csaf_ot
Honeywell fixed the reported issues and advises users to upgrade to version referenced in the Security Notice or CVE record.
https://process.honeywell.com/us/en/support/technical-publication?search=SN2024
MitigationPlantCruise by Experioncisa_csaf_ot
Honeywell fixed the reported issues and advises users to upgrade to version referenced in the Security Notice or CVE record.
https://process.honeywell.com/us/en/support/technical-publication?search=SN2024
MitigationSafety Managercisa_csaf_ot
Honeywell fixed the reported issues and advises users to upgrade to version referenced in the Security Notice or CVE record.
https://process.honeywell.com/us/en/support/technical-publication?search=SN2024
MitigationSafety Manager SCcisa_csaf_ot
Honeywell fixed the reported issues and advises users to upgrade to version referenced in the Security Notice or CVE record.
https://process.honeywell.com/us/en/support/technical-publication?search=SN2024

cvss

Technical severity, 0–10. One row per scoring source.

5.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · psirt@honeywell.comexploitability 2.2 · impact 3.6

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USCWE-787US

affected products (34)

Products and version ranges known to be affected.

Honeywell Experion LX: <R511.5_TCU4_HF4all versionscisa_csaf_otUS
Honeywell Experion LX: <R520.1_TCU5all versionscisa_csaf_otUS
Honeywell Experion LX: <R520.2_TCU4_HF2all versionscisa_csaf_otUS
Honeywell Experion PKS: <R510.2_HF14all versionscisa_csaf_otUS
Honeywell Experion PKS: <R511.5_TCU4_HF4all versionscisa_csaf_otUS
Honeywell Experion PKS: <R520.1_TCU5all versionscisa_csaf_otUS
Honeywell Experion PKS: <R520.2_TCU4_HF2all versionscisa_csaf_otUS
Honeywell PlantCruise by Experion: <R511.5_TCU4_HF4all versionscisa_csaf_otUS
Honeywell PlantCruise by Experion: <R520.1_TCU5all versionscisa_csaf_otUS
Honeywell PlantCruise by Experion: <R520.2_TCU4_HF2all versionscisa_csaf_otUS
Honeywell Safety Manager SC: R210.Xall versionscisa_csaf_otUS
Honeywell Safety Manager SC: R211.1all versionscisa_csaf_otUS
Honeywell Safety Manager SC: R211.2all versionscisa_csaf_otUS
Honeywell Safety Manager SC: R212.1all versionscisa_csaf_otUS
Honeywell Safety Manager: >=R16x|<=R162.10all versionscisa_csaf_otUS
Honeywell Safety Manager: R15xall versionscisa_csaf_otUS
Honeywell Experion LX< R511.5_TCU4_HF4cisa_csaf_otUS
Honeywell Experion LX< R520.1_TCU5cisa_csaf_otUS
Honeywell Experion LX< R520.2_TCU4_HF2cisa_csaf_otUS
Honeywell Experion PKS< R510.2_HF14cisa_csaf_otUS

showing 20 of 34

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-24-116-04Honeywell Experion PKS, Experion LX, PlantCruise by Experion, Safety Manager, Safety Manager SC2024-04-25icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could disclose sensitive information, allow privilege escalation, or allow remote code execution.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot NVD CVE.org MITRE

published 2024-04-17modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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