Numeric error in Allen-Bradley
Priority MEDIUM 41CWE-189Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-189 and the CVSS impact.
Summary
An exploitable denial-of-service vulnerability exists in the IPv4 functionality of Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 16.000, Series B FRN 15.002, Series B FRN 15.000, Series B FRN 14.000, Series B FRN 13.000, Series B FRN 12.000, Series B FRN 11.000 and Series B FRN 10.000. A specially crafted packet can cause a major error, resulting in a denial of service. An attacker can send a malicious packet to trigger this vulnerability.
Why it matters now
EPSS 0.05555 92nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Allen-Bradley | Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 10.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 11.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 12.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 13.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 14.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 15.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 15.002, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 16.000 | — | No fix listed | CNA |
- Allen-Bradley Vendor— Affected Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 10.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 11.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 12.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 13.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 14.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 15.000, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 15.002, Allen-Bradley MicroLogix 1100 Programmable Logic Controller Systems Series B FRN 16.000 Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:10.000:*:*:*:*:*:*:* | 10.000 | Vulnerable | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:11.000:*:*:*:*:*:*:* | 11.000 | Vulnerable | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:12.000:*:*:*:*:*:*:* | 12.000 | Vulnerable | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:13.000:*:*:*:*:*:*:* | 13.000 | Vulnerable | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:14.000:*:*:*:*:*:*:* | 14.000 | Vulnerable | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:15.000:*:*:*:*:*:*:* | 15.000 | Vulnerable | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:15.002:*:*:*:*:*:*:* | 15.002 | Vulnerable | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:16.000:*:*:*:*:*:*:* | 16.000 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:micrologix_1100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:10.000:*:*:*:*:*:*:* Versions 10.000 Vulnerable ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:11.000:*:*:*:*:*:*:* Versions 11.000 Vulnerable ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:12.000:*:*:*:*:*:*:* Versions 12.000 Vulnerable ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:13.000:*:*:*:*:*:*:* Versions 13.000 Vulnerable ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:14.000:*:*:*:*:*:*:* Versions 14.000 Vulnerable ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:15.000:*:*:*:*:*:*:* Versions 15.000 Vulnerable ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:15.002:*:*:*:*:*:*:* Versions 15.002 Vulnerable ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1100_b_firmware:16.000:*:*:*:*:*:*:* Versions 16.000 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:micrologix_1100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-6111
- 2026-10-03 Alias added: GHSA-43vh-m5cv-9pgr
References
Sources
- CVE-2020-6111 · CVE Program
- CVE-2020-6111 · NVD
- FIRST EPSS
- GHSA-43vh-m5cv-9pgr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences