Rockwell Automation RSLinx Classic Versions 4.00.01 and prior.

published 2018-09-20 8y ago modified 2026-06-17 4mo ago also EUVD-2018-6711

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.8%; EPSS 3.8% chance of exploitation in 30 days, percentile 89%
public exploits: 0; none known

Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. A remote, unauthenticated threat actor may intentionally send specially crafted Ethernet/IP packets to Port 44818, causing the software application to stop responding and crash. The user must restart the software to regain functionality.

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Vendor advisories

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

cisa ICSA-18-263-02 updated 2018-09-20 cvss 8.6

Rockwell Automation RSLinx Classic

Rockwell Automation RSLinx Classic <= 4.00.01
affected: mitigation “Rockwell Automation has released a new version of the software that can found at Rockwell Automation knowledgebase article KB 1075712” rockwellautomation.custhelp.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

3.76% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

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	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

Rockwell Automation RSLinx Classic

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

ics-cert.us-cert.gov /advisories/ICSA-18-263-02
third-party-advisory, us-government-resource

Sources

CVE List CVE-2018-14827
NVD CVE-2018-14827

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