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Fencer Intel
critical 9.8

CVE-2012-6437 in the critical feed json

Rockwell Automation ControlLogix PLC Improper Authentication

published 2013-01-24 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-6290

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
10.5%
EPSS 10.5% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

The device does not properly authenticate users and the potential exists for a remote user to upload a new firmware image to the Ethernet card, whether it is a corrupt or legitimate firmware image. Successful exploitation of this vulnerability could cause loss of availability, integrity, and confidentiality and a disruption in communications 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

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-13-011-03 updated cvss 10.0

Rockwell Automation ControlLogix PLC Vulnerabilities

  • Rockwell Automation 1756-ENBT Rockwell Automation 1756-EWEB Rockwell Automation 1768-ENBT Rockwell Automation 1768-EWEB Rockwell Automation 1788-ENBT FLEXLogix adapter Rockwell Automation 1794-AENTR FLEX I/O EtherNet/IP adapter
    +10 more products
    Rockwell Automation CompactLogix Rockwell Automation CompactLogix and SoftLogix controllers <=19 Rockwell Automation CompactLogix L32E and L35E controllers Rockwell Automation ControlLogix Rockwell Automation ControlLogix and GuardLogix controllers <=20 Rockwell Automation EtherNet/IP products that conform to the CIP and EtherNet/IP specifications Rockwell Automation GuardLogix Rockwell Automation MicroLogix 1100 Rockwell Automation MicroLogix 1400 Rockwell Automation SoftLogix <=18
    affected: mitigation “(https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155)” rockwellautomation.custhelp.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
5 mo ago

Exploit prediction

10.53% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Rockwell Automation 1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules
  • Rockwell Automation CompactLogix L32E and L35E controllers
  • Rockwell Automation 1788-ENBT FLEXLogix adapter
  • Rockwell Automation 1794-AENTR FLEX I/O EtherNet/IP adapter
  • Rockwell Automation ControlLogix, CompactLogix, GuardLogix, and SoftLogix
  • Rockwell Automation CompactLogix and SoftLogix controllers
  • Rockwell Automation ControlLogix and GuardLogix controllers
  • Rockwell Automation MicroLogix

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.