CVE-2025-55097

Device crash via undersized audio descriptor

Published Oct 17, 2025 · Updated Oct 17, 2025

Out-of-bounds read in Eclipse ThreadX USBX before 6.4.3 allows physically proximate attackers to crash a host via a USB device. The _ux_host_class_audio_streaming_sampling_get() loop trusts bSamFreqType and reads three-byte frequency entries without ensuring the descriptor contains the claimed array. Exploitation requires connecting a malicious USB audio streaming device with a large frequency-count value and an undersized descriptor, and the documented consequence is a host crash.

CVSS severity2.4
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Eclipse ThreadX USBX before 6.4.3 allows physically proximate attackers to crash a host via a USB device. The _ux_host_class_audio_streaming_sampling_get() loop trusts bSamFreqType and reads three-byte frequency entries without ensuring the descriptor contains the claimed array. Exploitation requires connecting a malicious USB audio streaming device with a large frequency-count value and an undersized descriptor, and the documented consequence is a host crash.

The record

CVE
CVE-2025-55097
Published
Oct 17, 2025
Updated
Oct 17, 2025
Vendor
The Eclipse Foundation
Product
Eclipse ThreadX USBX
Classifications
CWE-125, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 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=0 <6.4.3

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse ThreadX USBXversion=0 <6.4.3

Published CVSS scores

2.4Eclipse FoundationCVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
6.1NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1200Hardware Additions

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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