CVE-2026-96582

Out-of-bounds Read via Check-after-use in the USBX HID Report Descriptor Parser

Published Oct 20, 2026 CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Description
A HID report descriptor is a sequence of items, each declaring in its header how many data bytes follow. The USBX host walks that sequence by advancing over each header and parsing the data behind it.



The walk checked that an item fitted in the descriptor only **after** it had advanced past the header and parsed the payload, and the item analysis it relied on never measured the declared sizes against the bytes actually received. A HID peripheral returning a short report descriptor therefore drove a heap out-of-bounds read during ordinary enumeration.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Eclipse
Eclipse threadx Usbx
Vendors & Products Eclipse
Eclipse threadx Usbx
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A HID report descriptor is a sequence of items, each declaring in its header how many data bytes follow. The USBX host walks that sequence by advancing over each header and parsing the data behind it. The walk checked that an item fitted in the descriptor only **after** it had advanced past the header and parsed the payload, and the item analysis it relied on never measured the declared sizes against the bytes actually received. A HID peripheral returning a short report descriptor therefore drove a heap out-of-bounds read during ordinary enumeration.
Title Out-of-bounds Read via Check-after-use in the USBX HID Report Descriptor Parser
Weaknesses CWE-125
CWE-1285
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
eclipse
Published
Updated
Oct 20, 2026, 3:29 PM
Reserved
Sep 23, 2026, 1:43 PM
Status
Awaiting Analysis
Published
Oct 20, 2026, 2:17 PM
Modified
Oct 20, 2026, 7:48 PM