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TI-2020-04952 Aliases CVE-2020-6085GHSA-gmwm-3vqc-c23g

Buffer overflow in Allen Bradley

Priority MEDIUM 40CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.04263 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Allen BradleyAllen-Bradley Flex IO 1794-AENT/B 4.003—No fix listedCNA
  • Allen Bradley Vendor— Affected Allen-Bradley Flex IO 1794-AENT/B 4.003 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:rockwellautomation:flex_i\/o_1794-aent:4.003:*:*:*:*:*:*:*4.003VulnerableRockwell
cpe:2.3:h:rockwellautomation:flex_i\/o_1794-aent:-:*:*:*:*:*:*:*not specified by NVDRunning onRockwell
  • cpe:2.3:o:rockwellautomation:flex_i\/o_1794-aent:4.003:*:*:*:*:*:*:* Versions 4.003 Vulnerable ·Rockwell
  • cpe:2.3:h:rockwellautomation:flex_i\/o_1794-aent:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-6085
  2. 2026-10-03 Alias added: GHSA-gmwm-3vqc-c23g

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences