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01 Record

CVE-2023-5397

Server receiving a malformed message to create a new connection could lead to an attacker performing remote code execution or causing a failure. See Honeywell Security Notification for recommendations

HighPUBLISHEDCNA: Honeywell
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

Server receiving a malformed message to create a new connection could lead to an attacker performing remote code execution or causing a failure. See Honeywell Security Notification for recommendations

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.77% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 55.2% of scored records. A rank, not a probability.
NVD base score
8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-04-17 16:38Z2 YR AGO
Last updated
2024-08-08 15:58Z2 YR AGO
Reserved
2023-10-04
Assigning CNA
Honeywell
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
5a53d7be1e24fd7ca1001ff7ed63c59447905a2580c4a52ffb24ca5bd74594ac

05 Affected products

VendorProductVersionsPlatforms
HoneywellExperion Server520.2 to 520.2 TCU4, 510.1 to 510.2 HF13, 520.1 to 520.1 TCU4, 511.1 to 511.5 TCU4 HF3, 520.2 TCU4 HFR2 to 511.5 TCU4 HF3Experion PKS, Experion LX, PlantCruise by Experion
honeywellexperion_server520.2 to 520.2_tcu4, 510.1 to 510.2_hf13, 520.1 to 520.1_tcu4, 511.1 to 511.5_tcu4_hf3, 520.2_tcu4_hfr2 to 511.5_tcu4_hf3—

06 References