CVE-2020-6085

Flex I\/O 1794 Aent vulnerability

CVSS

7.5

EPSS

3.6%

EPSS pct

88th

Exploited

No known

An exploitable denial of service vulnerability exists in the ENIP Request Path Logical Segment functionality of Allen-Bradley Flex IO 1794-AENT/B 4.003. 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 by sending an Electronic Key Segment with less than 0x18 bytes following the Key Format field.

Affected vendor

Rockwellautomation

Affected product

Flex I\/O 1794 Aent

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type (CWE)

CWE-120 — Classic Buffer Overflow

Published

2020-10-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2020-6085

Confirm whether Rockwellautomation Flex I\/O 1794 Aent is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-6085.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-6085

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-6085 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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