A Resource Exhaustion issue was discovered in Schneider Electric Modicon M340 PLC BMXNOC0401, BMXNOE0100, BMXNOE0110, BMXNOE0110H, BMXNOR02…

published 2017-06-30 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15085

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.8%; EPSS 4.8% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

A Resource Exhaustion issue was discovered in Schneider Electric Modicon M340 PLC BMXNOC0401, BMXNOE0100, BMXNOE0110, BMXNOE0110H, BMXNOR0200H, BMXP341000, BMXP342000, BMXP3420102, BMXP3420102CL, BMXP342020, BMXP342020H, BMXP342030, BMXP3420302, BMXP3420302H, and BMXP342030H. A remote attacker could send a specially crafted set of packets to the PLC causing it to freeze, requiring the operator to physically press the reset button on the PLC in order to recover.

Vendor advisories

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

cisa ICSA-17-054-03 updated 2019-01-10 cvss 7.5

Schneider Electric Modicon M340 PLC (Update A)

Schneider Electric Software, LLC M1E CPUs Schneider Electric Software, LLC M340 CPUs with firmware < 2.9 Schneider Electric Software, LLC M580 CPUs with firmware < 2.3 Schneider Electric Software, LLC Premium CPUs Schneider Electric Software, LLC Quantum CPUs with firmware < 3.52
affected: mitigation “M340: https://www.schneider-electric.fr/fr/search/V2.9?filters=CAT_PRD_DOC_FIRMUPD” schneider-electric.fr

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

4.81% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	7.8	AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

n/a Schneider Electric Modicon M340 PLC

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

schneider-electric.com /en/download/document/SEVD-2017-048-02/
securityfocus.com /bid/96414
vdb-entry, third-party-advisory
ics-cert.us-cert.gov /advisories/ICSA-17-054-03
mitigation, third-party-advisory, us-government-resource

Sources

CVE List CVE-2017-6017
NVD CVE-2017-6017

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