CVE-2012-4690

What it is

Rockwell Automation Allen-Bradley MicroLogix controller 1100, 1200, 1400, and 1500; SLC 500 controller platform; and PLC-5 controller platform, when Static status is not enabled, allow remote attackers to cause a denial of service via messages that trigger modification of status bits.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

4.0% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2012-12-08 15:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:45 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.0% in the next 30 days (EPSS).
• Severity: 7.1 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2012-12-08 15:55 UTC

Last modified

2026-06-16 23:45 UTC

Exploit probability

4.0% · EPSS, next 30 days

Weakness

CWE-16

Record status

Modified

Affected

• Rockwellautomation Ab Micrologix Controller 1100
• Rockwellautomation Ab Micrologix Controller 1200
• Rockwellautomation Ab Micrologix Controller 1400
• Rockwellautomation Ab Micrologix Controller 1500
• Rockwellautomation plc-5 Controller
• Rockwellautomation Slc 500 Controller

Attack profile CVSS 2.0 · 7.1

Attack vector

Network

Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

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