THREATPORT/VULNERABILITY/CVE-2020-6084
HIGH SEVERITY

CVE-2020-6084

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 bytes than required by the Key Format Table.
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-2020-6084

  • 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-2020-6084.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-6084

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-6084 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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