VULNERABILITY INTELLIGENCE

CVE-2020-6086

CVSS score7.5 HIGH
EPSS probability4.26%
CISA KEVNot currently listed
Published2020-10-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

An exploitable denial of service vulnerability exists in the ENIP Request Path Data Segment functionality of Allen-Bradley Flex IO 1794-AENT/B. A specially crafted network request can cause a loss of communications with the device resulting in denial-of-service. An attacker can send a malicious packet to trigger this vulnerability.If the Simple Segment Sub-Type is supplied, the device treats the byte following as the Data Size in words. When this value represents a size greater than what remains in the packet data, the device enters a fault state where communication with the device is lost and a physical power cycle is required.

Weakness classification

  • talos-cna@cisco.com: CWE-120
  • nvd@nist.gov: CWE-120

Primary references