Vulnerability · Published Apr 17, 2024 · Assigned by Honeywell

CVE-2023-5406

Medium 5.9

In plain English

A medium-severity out-of-bounds write in Experion Server from Honeywell. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.7%top 47.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
Honeywell Experion Server 520.2 – through 520.2 TCU4510.1 – through 510.2 HF13520.1 – through 520.1 TCU4511.1 – through 511.5 TCU4 HF3
Honeywell Experion Server 520.2 – through 520.2 TCU4511.1 – through 511.5 TCU4 HF3520.1 – through 520.1 TCU4
Honeywell Experion Server 520.2 – through 520.2 TCU4520.1 – through 520.1 TCU4520.2 TCU4 HFR2 – through 511.5 TCU4 HF3

Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References