CVE-2025-55100

Memory disclosure via unchecked sampling-frequency count

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 disclose memory via a USB audio descriptor. The _ux_host_class_audio10_sam_parse_func() loop trusts the descriptor count at byte 7 and reads three bytes per entry from offset 8 without verifying the remaining descriptor length. Exploitation requires a user to connect a crafted USB audio device; the published impact is limited to disclosure from the vulnerable system.

CVSS severity2.4
Low
EPSS probability0.52%
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 disclose memory via a USB audio descriptor. The _ux_host_class_audio10_sam_parse_func() loop trusts the descriptor count at byte 7 and reads three bytes per entry from offset 8 without verifying the remaining descriptor length. Exploitation requires a user to connect a crafted USB audio device; the published impact is limited to disclosure from the vulnerable system.

The record

CVE
CVE-2025-55100
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

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
2.4Eclipse FoundationCVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

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)
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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