Out-of-bounds Read in Eclipse Threadx Usbx
CVE-2025-55099
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (29.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Eclipse Threadx Usbx
- Eclipse Foundation Usbx — versions 0
Weakness classification (CWE)
References
- github.com/eclipse-threadx/usbx/security/advisories/GHSA-93mv-fcpr-9488 (Exploit, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-55099?
- CVE-2025-55099 is a medium-severity vulnerability in Eclipse Threadx Usbx, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2025-10-17.
- How severe is CVE-2025-55099?
- Medium severity. CVSS v3 base score is 6.1 out of 10.