CVE-2023-5398: Honeywell Experion Server

Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Honeywell Experion Server: from 520.2, up to and including 520.2 TCU4; from 510.1, up to and including 510.2 HF13; from 520.1, up to and including 520.1 TCU4; from 511.1, up to and including 511.5 TCU4 HF3; from 520.2 TCU4 HFR2, up to and including 511.5 TCU4 HF3; from 520.2, up to and including 520.2_tcu4; …

Published 2024-04-17. Last modified 2026-06-17.