CVE-2026-96402 PUBLISHED

USBX PIMA/MTP host class reads past its receive buffer when a device over-reports its object handle count

Assigner: eclipse
Reserved: 23.09.2026 Published: 20.10.2026 Updated: 20.10.2026

A malicious USB MTP/PTP device can cause the USBX host to read past a heap buffer during ordinary object enumeration, leaking adjacent heap contents to the application or faulting on an unmapped page.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 5.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Physical	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	Active

CVSS 4.0

Product Status

Vendor	Eclipse Foundation
Product	Eclipse ThreadX - USBX
Versions	Default: unaffected affected from 0 to 6.5.1.202602 (incl.) Version 6.5.2.202603 is unaffected

Credits

Microsvuln reporter

References

https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-2ch9-p8xv-fwp6

Problem Types

CWE-125 Out-of-bounds Read CWE