Is CVE-2012-6439 actively exploited?

No active exploitation of CVE-2012-6439 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2012-6439 be exploited remotely?

Yes. CVE-2012-6439 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2012-6439?

CVE-2012-6439 has a CVSS score of 8.5 (HIGH).

HOME VULNERABILITIESCVE-2012-6439

HIGH

CVE-2012-6439

CWE-284Published: January 24, 2013· Updated: Jun 16, 2026

8.5

CVSS v3.1

Official Description

When an affected

product receives a valid CIP message from an unauthorized or unintended

source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port

44818/UDP that changes the product’s configuration and network

parameters, a DoS condition can occur. This situation could cause loss

of availability and a disruption of communication with other connected

devices.

Rockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400

NVD Source

Technical Analysis

CVE-2012-6439 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.

User Interaction

Scope

Impact

ConfidentialityNone

IntegrityP

AvailabilityC

AV:N/AC:L/Au:N/C:N/I:P/A:C

Affected Vendors & Products

rockwellautomation17 product(s)

controllogix controllersguardlogix controllersmicrologixsoftlogix controllers1756-enbt1756-eweb1768-enbt1768-eweb1794-aentr flex i\/o ethernet\/ip adaptercompactlogixcompactlogix controllerscompactlogix l32e controller+5

Source: NVD CPE · 17 total CPE entries