No exploitation reported

CVE-2012-6435

No exploitation reported by the sources we read.

Published2013-01-24
WeaknessCWE-284 · CWE-399

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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 instructs the CPU to stop logic execution and enter a fault state, a DoS 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

Timeline

dates in UTC

2013-01-2421:55CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2012-6435?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2012-6435?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Rockwellautomation micrologix

Branch	Affected	Fixed in	Source
1100.x	≤ 1100	no fix published	NVD
1400.x	≤ 1400	no fix published	NVD

Rockwellautomation 1756-enbt

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Rockwellautomation 1756-eweb

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

14 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-13-011-03 CISA16 known affected
Rockwell Automation ControlLogix PLC Vulnerabilities
Rockwell Automation EtherNet/IP products that conform to the CIP and EtherNet/IP specifications: vers:all/* · Rockwell Automation 1756-ENBT: vers:all/* · Rockwell Automation 1756-EWEB: vers:all/* · +13 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-13-011-03 · 16 productsAccording to Rockwell, any of the above products that become affected by a vulnerability can be reset by rebooting or power cycling the affected product. After the reboot, the affected product may require some reconfiguration.
Mitigation from the vendor CISA ICSA-13-011-03 · 16 productsTo mitigate the vulnerabilities, Rockwell has developed and released security patches on July 18, 2012, to address each of the issues. To download and install the patches please refer to Rockwell’s Advisories at: (https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154)
Mitigation from the vendor CISA ICSA-13-011-03 · 16 products(https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155)
Mitigation from the vendor CISA ICSA-13-011-03 · 16 products(https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156)
Mitigation from the vendor CISA ICSA-13-011-03 · 16 productsFor more information on security with Rockwell Automation products, please refer to Rockwell’s Security Advisory Index.(http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102)
Mitigation from the vendor CISA ICSA-13-011-03 · 16 productsRockwell recommends updating to the newest firmware patches to fix the vulnerabilities, but if not able to do so right away, then Rockwell advises immediately employing the following mitigations for each of the affected products.

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2026-06-03
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.17.52026-06-03
CNACVSS 2.07.8read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
CNAweakness (CWE)CWE-284read 2026-10-23
NVDweakness (CWE)CWE-399read 2026-10-23
FIRST EPSSEPSS score33.5 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2013-01-24
Last Modified: 2026-06-16
NVD status: Modified

Frequently asked questions

What is CVE-2012-6435?

Is CVE-2012-6435 actively exploited?

Active exploitation of CVE-2012-6435 has not been confirmed. Its EPSS score was 33.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2012-6435?

CVE-2012-6435 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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