CVE-2026-96582
Out-of-bounds Read via Check-after-use in the USBX HID Report Descriptor Parser
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.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
4.9
Out-of-bounds Read via Check-after-use in the USBX HID Report Descriptor Parser
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.
- Record
CVE-2026-96582- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Weakness
- CWE-125, CWE-1285
- Updated
- 2026-11-02
EUVDEUVD-2026-105000
4.9
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.
- Record
EUVD-2026-105000- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Updated
- 2026-11-02
NVD
4.9
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.
- Record
CVE-2026-96582- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Weakness
- CWE-125, CWE-1285
- Updated
- 2026-11-02
OSV
4.9
Out-of-bounds Read via Check-after-use in the USBX HID Report Descriptor Parser
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.
- Record
CVE-2026-96582- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Weakness
- CWE-125, CWE-1285
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-96582 is a medium vulnerability (CVSS 4.9) in Eclipse Foundation Threadx - Usbx, published October 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. No source names a fixed version.