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TI-2020-04955 Aliases CVE-2020-6088GHSA-6phq-rjgc-62hr

Buffer overflow in Allen-Bradley

Priority LOW 39CWE-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 Network 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.

Why it matters now

EPSS 0.03496 89th 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_io_1794-aent\/b_firmware:4.003:*:*:*:*:*:*:*4.003VulnerableRockwell
cpe:2.3:h:rockwellautomation:flex_io_1794-aent\/b:-:*:*:*:*:*:*:*not specified by NVDRunning onRockwell
  • cpe:2.3:o:rockwellautomation:flex_io_1794-aent\/b_firmware:4.003:*:*:*:*:*:*:* Versions 4.003 Vulnerable ·Rockwell
  • cpe:2.3:h:rockwellautomation:flex_io_1794-aent\/b:-:*:*:*:*:*:*:* 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-2020-6088
  2. 2026-10-03 Alias added: GHSA-6phq-rjgc-62hr

References

Exploit 1

Sources

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