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Vulnerability record · CVE-2017-7924 · published 20 September 2017

CVE-2017-7924: Rockwellautomation 1763-l16bwa firmware improper input validation vulnerability

Rockwellautomation · 1763 L16bwa Firmware

An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD. A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition.

7.5 CVSS 3.0 High EPSS 22% · top 2.4% CWE-20 · Improper input validation
7.5CVSS 3.0 base score, v2 5.0
22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD. A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition.

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

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/99622 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03 MitigationThird Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/99622 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03 MitigationThird 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-2017-7924), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.