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No exploitation reported

CVE-2020-6083

No exploitation reported by the sources we read.

  • Published2020-10-14
  • WeaknessCWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An exploitable denial of service vulnerability exists in the ENIP Request Path Port 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.

Timeline

dates in UTC
  1. 2020-10-1413:15CVE publishedNVD

Versions per branch

NVD
Rockwellautomation allen-bradley flex io 1794-aent\/b firmwareversion to verify
BranchAffectedFixed in
4.3= 4.003no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-20-294-01 CISA1 known affected

    Rockwell Automation 1794-AENT Flex I/O Series B

    1794-AENT Flex I/O Series B: Versions 4.003 and prior

Full record on NVD

Fix

  1. Mitigation from the vendor CISA ICSA-20-294-01 · 1 productRockwell Automation recommends affected users ensure they are employing proper network segmentation and security controls when implementing the affected product.
  2. Mitigation from the vendor CISA ICSA-20-294-01 · 1 productFor more information please see the Rockwell Automation Security Advisory (login required).

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • CNACVSS 3.07.5known since 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-120known since 2026-10-23
  • NVDweakness (CWE)CWE-120read 2026-10-23
  • FIRST EPSSEPSS score4.2 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-10-14
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-x37f-5xr3-qgfw

Frequently asked questions

What is CVE-2020-6083?

An exploitable denial of service vulnerability exists in the ENIP Request Path Port 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.

Is CVE-2020-6083 actively exploited?

Active exploitation of CVE-2020-6083 has not been confirmed. Its EPSS score was 4.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-6083?

CVE-2020-6083 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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