Medium severity · published Oct 17, 2025
CVE-2025-55099
Potential out-of-bounds read in _ux_host_class_audio_alternate_setting_locate()
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _ux_host_class_audio_alternate_setting_locate() when parsing a descriptor with attacker-controlled frequency fields.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
US
USBX · Eclipse Foundation
before 6.4.3 · source: vendor
TU
Threadx Usbx · Eclipse
before 6.4.3.202503 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55099
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55099
Exploit
https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-93mv-fcpr-9488
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