CVE-2022-29223Network attack vector

Memory overwrite via oversized hub port count

Published May 24, 2022 · Updated Apr 23, 2025

Buffer overflow in Eclipse ThreadX USBX before 6.1.10 allows attackers to overwrite memory through a crafted USB hub descriptor. ux_host_class_hub_descriptor_get trusts bNbPorts values above UX_MAX_TT and writes excess entries past the ux_device_hub_tt array boundary. The USB host stack must process the descriptor; the published result is memory corruption beyond that array, with no higher-level outcome established.

CVSS severity7.5
High
EPSS probability1.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Eclipse ThreadX USBX before 6.1.10 allows attackers to overwrite memory through a crafted USB hub descriptor. ux_host_class_hub_descriptor_get trusts bNbPorts values above UX_MAX_TT and writes excess entries past the ux_device_hub_tt array boundary. The USB host stack must process the descriptor; the published result is memory corruption beyond that array, with no higher-level outcome established.

The record

CVE
CVE-2022-29223
Published
May 24, 2022
Updated
Apr 23, 2025
Vendor
The Eclipse Foundation
Product
Eclipse ThreadX USBX
Classifications
CWE-120
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.1.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse ThreadX USBXversion=< 6.1.10

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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