What is CVE-2025-55100?

CVE-2025-55100 is a critical-severity vulnerability in Eclipse Threadx Usbx, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2025-10-17.

How severe is CVE-2025-55100?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Out-of-bounds Read in Eclipse Threadx Usbx

CVE-2025-55100

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_audio10_sam_parse_func() when parsing a list of sampling frequencies.

Vulnerability class: Buffer Overflow

Published 2025-10-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (44.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

Eclipse Threadx Usbx
Eclipse Foundation Usbx — versions 0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

github.com/eclipse-threadx/usbx/security/advisories/GHSA-j253-w29r-9m48 (Exploit, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-55100?: CVE-2025-55100 is a critical-severity vulnerability in Eclipse Threadx Usbx, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2025-10-17.
How severe is CVE-2025-55100?: Critical severity. CVSS v3 base score is 9.1 out of 10.