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CVE-2023-5398

Server receiving a malformed message based on a list of IPs resulting in heap corruption causing a denial of service. See Honeywell…

Medium5.9EPSS 0.44%
Published
Updated
Reserved
Assigned by
Honeywell

Description

Server receiving a malformed message based on a list of IPs resulting in heap corruption causing a denial of service. See Honeywell Security Notification for recommendations on upgrading and versioning.

Timeline

  1. ID reserved

    By Honeywell

  2. · 7 months later

    Published

  3. · 4 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2023-5398, by who scored it
Scored byCVSSScoreVector
HoneywellCNA (assigner)3.1Medium5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Deferred3.1Medium5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.44% · top 61% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.

Weakness

Affected products

  • Honeywell · Experion Server

    • affected 520.2 – ≤ 520.2 TCU4
    • affected 510.1 – ≤ 510.2 HF13
    • affected 520.1 – ≤ 520.1 TCU4
    • affected 511.1 – ≤ 511.5 TCU4 HF3

  • Honeywell · Experion Server

    • affected 520.2 – ≤ 520.2 TCU4
    • affected 511.1 – ≤ 511.5 TCU4 HF3
    • affected 520.1 – ≤ 520.1 TCU4

  • Honeywell · Experion Server

    • affected 520.2 – ≤ 520.2 TCU4
    • affected 520.1 – ≤ 520.1 TCU4
    • affected 520.2 TCU4 HFR2 – ≤ 511.5 TCU4 HF3

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .