Is CVE-2012-6440 actively exploited?

No active exploitation of CVE-2012-6440 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2012-6440 be exploited remotely?

Yes. CVE-2012-6440 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2012-6440?

CVE-2012-6440 has a CVSS score of 4.8 (MEDIUM).

HOME VULNERABILITIESCVE-2012-6440

MEDIUM

CVE-2012-6440

CWE-287Published: January 24, 2013· Updated: Jun 16, 2026

4.8

CVSS v3.1

Official Description

The Web server password authentication mechanism used by the products is vulnerable to a MitM and Replay attack. Successful exploitation of this vulnerability will allow unauthorized access of the product’s Web server to view and alter product configuration and diagnostics information.

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-2012-6440 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

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