CVE-2017-7924

Name: CVE-2017-7924
Creator: NVD / NIST
Published: 2017-09-20T16:29:00.863+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 22.18%

Last modified Jun 17, 2026

CVE-2017-7924 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 22.18% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

22.18%

97.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rockwellautomation	1763-L16bwa Firmware	All versions
Rockwellautomation	1763-L16awa Firmware	All versions
Rockwellautomation	1763-L16bbb Firmware	All versions
Rockwellautomation	1763-L16dwd Firmware	All versions

References

http://www.securityfocus.com/bid/99622Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03Mitigation, Third Party Advisory, US Government Resource
http://www.securityfocus.com/bid/99622Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03Mitigation, Third Party Advisory, US Government Resource

Timeline

Published: Sep 20, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7924?

How severe is CVE-2017-7924?

Severity scoring for CVE-2017-7924 is pending analysis. The EPSS model estimates a 22.18% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7924?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7924?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST