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Vulnerability record · CVE-2016-9343 · published 13 February 2017

CVE-2016-9343: Rockwellautomation softlogix 5800 controller firmware out-of-bounds write vulnerability

Rockwellautomation · Softlogix 5800 Controller Firmware

An issue was discovered in Rockwell Automation Logix5000 Programmable Automation Controller FRN 16.00 through 21.00 (excluding all firmware versions prior to FRN 16.00, which are not affected). By sending malformed common industrial protocol (CIP) packet, an attacker may be able to overflow a stack-based buffer and execute code on the controller or initiate a nonrecoverable fault resulting in a denial of service.

10.0 CVSS 3.1 Critical EPSS 10% · top 4.4% CWE-787 · Out-of-bounds write
10.0CVSS 3.1 base score, v2 7.5
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
16Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Rockwell Automation Logix5000 Programmable Automation Controller FRN 16.00 through 21.00 (excluding all firmware versions prior to FRN 16.00, which are not affected). By sending malformed common industrial protocol (CIP) packet, an attacker may be able to overflow a stack-based buffer and execute code on the controller or initiate a nonrecoverable fault resulting in a denial of service.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

16 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/95304 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-343-05 Third Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/95304 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-343-05 Third Party AdvisoryUS Government Resource

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-9343), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.