What’s Vulnerable › Vulnerabilities
CVE-2020-6086
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 4.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2020-10-14 · updated 2026-06-17
- Weakness: CWE-120
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.
Affected products
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1007
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1007
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