An issue was discovered in Honeywell Experion Process Knowledge System (PKS) platform: Experion PKS, Release 3xx and prior, Experion PKS, R…

published 2017-02-13 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-9192

cvss: 3.7; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 75%
public exploits: 0; none known

An issue was discovered in Honeywell Experion Process Knowledge System (PKS) platform: Experion PKS, Release 3xx and prior, Experion PKS, Release 400, Experion PKS, Release 410, Experion PKS, Release 430, and Experion PKS, Release 431. Experion PKS does not properly validate input. By sending a specially crafted packet, an attacker could cause the process to terminate. A successful exploit would prevent firmware uploads to the Series-C devices.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-301-01 updated 2025-06-05 cvss 3.7

Honeywell Experion PKS Improper Input Validation Vulnerability

Honeywell Experion PKS <=3xx, 400, 410, 430
affected: mitigation “Honeywell recommends that Experion users download and apply the appropriate patch to protect themselves from this vulnerability.” honeywellprocess.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.55% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	3.7	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

n/a Honeywell Experion PKS through 431

Classification

Weakness

CWE-20 Improper Input Validation

References

ics-cert.us-cert.gov /advisories/ICSA-16-301-01
mitigation, third-party-advisory, us-government-resource
securityfocus.com /bid/93950
vdb-entry, third-party-advisory

Sources

CVE List CVE-2016-8344
NVD CVE-2016-8344

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary