What’s Vulnerable › Vulnerabilities
CVE-2020-6111
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 5.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-12-03 · updated 2026-06-17
- Weakness: CWE-189
Description
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.
Affected products
- Rockwellautomation Micrologix 1100 B Firmware: 10.000, 11.000, 12.000, 13.000, 14.000, 15.000 (+2)
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1057
- https://us-cert.cisa.gov/ics/advisories/icsa-21-047-02
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1057
- https://us-cert.cisa.gov/ics/advisories/icsa-21-047-02
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