CVE-2020-6111

HIGH
7.5
CVSS Score
Published: December 3, 2020 at 12:29 PM UTC
Updated: June 17, 2026 at 03:22 AM UTC
3 products affected across 1 vendorMicrologix 1100 B FirmwareMicroLogix 1100Flex Io 1794-aent B

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Severity
HIGH7.5
Exploit prediction
EPSS 6%

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.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCThird Party AdvisoryUS Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-047-02

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-189NVD-CWE-noinfo

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