CVE-2018-17924

high

Published 2018-12-07 · Modified 2026-06-03

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

8.6

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.6

Description

Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An unauthenticated, remote threat actor could send a CIP connection request to an affected device, and upon successful connection, send a new IP configuration to the affected device even if the controller in the system is set to Hard RUN mode. When the affected device accepts this new IP configuration, a loss of communication occurs between the device and the rest of the system as the system traffic is still attempting to communicate with the device via the overwritten IP address.

Predictions

Exploit likelihood

91%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions
rockwellautomation	micrologix_1400	`-`
rockwellautomation	1756-enbt	`-`
rockwellautomation	1756-eweb_series_a	`-`
rockwellautomation	1756-eweb_series_b	`-`
rockwellautomation	1756-en2f_series_a	`-`
rockwellautomation	1756-en2f_series_b	`-`
rockwellautomation	1756-en2f_series_c	`-`
rockwellautomation	1756-en2t_series_a	`-`
rockwellautomation	1756-en2t_series_b	`-`
rockwellautomation	1756-en2t_series_c	`-`
rockwellautomation	1756-en2t_series_d	`-`
rockwellautomation	1756-en2tr_series_a	`-`
rockwellautomation	1756-en2tr_series_b	`-`
rockwellautomation	1756-en2tr_series_c	`-`
rockwellautomation	1756-en3tr_series_a	`-`
rockwellautomation	1756-en3tr_series_b	`-`

References

CWEs

CWE-306

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.