Vulnerability in Rockwellautomation Micrologix 1100
CVE-2020-6111
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.056 (92.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.056 · newest: 0.056 · change: 0.000
Affected products
- Rockwellautomation Micrologix 1100
- Rockwellautomation Micrologix 1100 B Firmware — versions 10.000, 11.000, 12.000
- Allen-Bradley — versions 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
Weakness classification (CWE)
References
- talosintelligence.com/vulnerability_reports/TALOS-2020-1057 (Third Party Advisory)
- us-cert.cisa.gov/ics/advisories/icsa-21-047-02 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-6111?
- CVE-2020-6111 is a high-severity vulnerability in Rockwellautomation Micrologix 1100, classified under CWE-189. CVSS score: 7.5/10. Published 2020-12-03.
- How severe is CVE-2020-6111?
- High severity. CVSS v3 base score is 7.5 out of 10.