Rockwell Automation ControlLogix PLC Improper Access Control
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 product to reset, 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
- Published
- Jan 24, 2013
- Updated
- Jun 16, 2026
- EPSS
- 35.5% · 98th percentile
- CWE
- CWE-284
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Report tools
Action score
41
Plan
Add it to your regular patch cycle.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 11 / 30 · 35.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · icscert
- 7.8
- NVD has not scored this yet; the score shown is the CNA’s.
AV:N/AC:L/Au:N/C:N/I:N/A:C
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| rockwellautomation | ethernet\/ip firmware | cpe:2.3:o:rockwellautomation:ethernet\/ip_firmware |
| rockwellautomation | 1756-enbt | cpe:2.3:h:rockwellautomation:1756-enbt |
| rockwellautomation | 1756-eweb | cpe:2.3:h:rockwellautomation:1756-eweb |
| rockwellautomation | 1768-enbt | cpe:2.3:h:rockwellautomation:1768-enbt |
| rockwellautomation | 1768-eweb | cpe:2.3:h:rockwellautomation:1768-eweb |
| rockwellautomation | compactlogix firmware | cpe:2.3:o:rockwellautomation:compactlogix_firmware |
| rockwellautomation | l32e | cpe:2.3:h:rockwellautomation:l32e |
| rockwellautomation | l35e | cpe:2.3:h:rockwellautomation:l35e |
| rockwellautomation | flexlogix firmware | cpe:2.3:o:rockwellautomation:flexlogix_firmware |
| rockwellautomation | 1788-enbt | cpe:2.3:h:rockwellautomation:1788-enbt |
| rockwellautomation | flex i\/o ethernet\/ip firmware | cpe:2.3:o:rockwellautomation:flex_i\/o_ethernet\/ip__firmware |
| rockwellautomation | 1794-aentr | cpe:2.3:h:rockwellautomation:1794-aentr |
and 10 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- rockwellautomation compactlogix controllers firmware19
- rockwellautomation compactlogix firmwareall versions
- rockwellautomation compactlogix firmware18
- rockwellautomation controllogix controllers firmware20
- rockwellautomation controllogix firmware18
- rockwellautomation ethernet/ip firmwareall versions
- rockwellautomation flex i/o ethernet/ip firmwareall versions
- rockwellautomation flexlogix firmwareall versions
- rockwellautomation guardlogix controllers firmware20
- rockwellautomation guardlogix firmware18
- rockwellautomation micrologix firmwareall versions
- rockwellautomation softlogix controllers firmware19
- rockwellautomation softlogix firmware18
Versions reported by the vendor
Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.
Rockwell Automation 1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules
- Allaffected
Rockwell Automation 1788-ENBT FLEXLogix adapter
- Allaffected
Rockwell Automation 1794-AENTR FLEX I/O EtherNet/IP adapter
- Allaffected
Rockwell Automation CompactLogix and SoftLogix controllers
- up to and including 19affected
Rockwell Automation CompactLogix L32E and L35E controllers
- Allaffected
Rockwell Automation ControlLogix and GuardLogix controllers
- up to and including 20affected
Rockwell Automation ControlLogix, CompactLogix, GuardLogix, and SoftLogix
- up to and including 18affected
Rockwell Automation MicroLogix
- 1100, 1400affected
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- rockwellautomation.custhelp.com/app/answers/detail/a_id/54102
- rockwellautomation.custhelp.com/app/answers/detail/a_id/470154
- rockwellautomation.custhelp.com/app/answers/detail/aid/470155
- rockwellautomation.custhelp.com/app/answers/detail/aid/470156
- www.cisa.gov/news-events/ics-advisories/icsa-13-011-03
- tools.cisco.com/security/center/viewAlert.x?alertId=27862
- www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf
Vendor advisories and official records. Exploit/PoC links are deliberately left out.