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Vulnerability record · CVE-2017-16740 · published 9 January 2018

CVE-2017-16740: Rockwellautomation 1766-l32bxba firmware classic buffer overflow vulnerability

Rockwellautomation · 1766 L32bxba Firmware

A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution.

10.0 CVSS 3.0 Critical EPSS 7.1% · top 5.9% CWE-120 · Classic buffer overflowCWE-119 · Memory buffer overflow
10.0CVSS 3.0 base score, v2 7.5
7.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/102474 MitigationThird Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01 Third Party AdvisoryUS Government Resource
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883
http://www.securityfocus.com/bid/102474 MitigationThird Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01 Third Party AdvisoryUS Government Resource
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883

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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-2017-16740), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.