How severe is CVE-2012-6441?

CVE-2012-6441 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-6441 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 54% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-6441?

CVE-2012-6441 primarily affects Rockwellautomation Controllogix Controllers. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-6441?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-6441 published?

CVE-2012-6441 was published on 2013-01-24 and last updated on 2026-06-16.

CVE-2012-6441

CVE-2012-6441 is a medium-severity vulnerability in Rockwellautomation Controllogix Controllers with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 54% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 54% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Rockwellautomation Controllogix Controllers
Published: 2013-01-24
Last modified: 2026-06-16

Description

An information exposure of confidential information results when the device receives a specially crafted CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP. Successful exploitation of this vulnerability could cause loss of confidentiality. 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

Frequently asked questions

What is CVE-2012-6441?: An information exposure of confidential information results when the device receives a specially crafted CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP. Successful exploitation of this vulnerability could cause loss of confidentiality. 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
How severe is CVE-2012-6441?: CVE-2012-6441 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-6441 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 54% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-6441?: CVE-2012-6441 primarily affects Rockwellautomation Controllogix Controllers. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-6441?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-6441 published?: CVE-2012-6441 was published on 2013-01-24 and last updated on 2026-06-16.

References

Affected products (17)

cpe:2.3:a:rockwellautomation:controllogix_controllers:*:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:guardlogix_controllers:*:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:micrologix:*:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:softlogix_controllers:*:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:1756-enbt:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:1756-eweb:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:1768-enbt:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:1768-eweb:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:1794-aentr_flex_i\/o_ethernet\/ip_adapter:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:compactlogix:*:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:compactlogix_controllers:*:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:compactlogix_l32e_controller:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:compactlogix_l35e_controller:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:controllogix:*:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:flexlogix_1788-enbt_adapter:-:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:guardlogix:*:*:*:*:*:*:*:*
cpe:2.3:h:rockwellautomation:softlogix:*:*:*:*:*:*:*:*

More vulnerabilities in Rockwellautomation Controllogix Controllers

CVE-2012-6437 — Critical (CVSS 9.8): The device does not properly authenticate users and the potential exists for a remote user to upload a new firmware…
CVE-2012-6439 — High (CVSS 8.5): When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP,…
CVE-2012-6438 — High (CVSS 7.5): The device does not properly validate the data being sent to the buffer. An attacker can send a malformed CIP packet to…
CVE-2012-6436 — High (CVSS 7.5): The device does not properly validate the data being sent to the buffer. An attacker can send a malformed CIP packet to…
CVE-2012-6435 — High (CVSS 7.5): When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port…
CVE-2012-6440 — Medium (CVSS 4.8): The Web server password authentication mechanism used by the products is vulnerable to a MitM and Replay attack.…

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