Out-of-bounds read via unchecked audio frequencies
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 trigger invalid memory access via USB. _ux_host_class_audio_alternate_setting_locate() trusts bSamFreqType and reads six bytes for a range or three bytes per listed frequency without checking the remaining descriptor length. A malicious USB audio device must present a truncated descriptor; the resulting over-read can crash the host or expose adjacent memory.
Summary
What happened
Out-of-bounds read in Eclipse ThreadX USBX before 6.4.3 allows physically proximate attackers to trigger invalid memory access via USB. _ux_host_class_audio_alternate_setting_locate() trusts bSamFreqType and reads six bytes for a range or three bytes per listed frequency without checking the remaining descriptor length. A malicious USB audio device must present a truncated descriptor; the resulting over-read can crash the host or expose adjacent memory.
The record
- CVE
- CVE-2025-55099
- 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
- Oct 17, 2025CVE publishedPublication date reported by the CVE source.
- 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.
- Affected versionversion=0 <6.4.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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