Use After Free in Espressif Esp-Usb
CVE-2025-68656
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.
Vulnerability class: Use-After-Free
EPSS: 0.002 (8.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Espressif Esp-usb — versions < 1.1.0
- Espressif Usb_host_hid_driver
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-68656?
- CVE-2025-68656 is a medium-severity vulnerability in Espressif Esp-Usb, classified under Use After Free. CVSS score: 6.8/10. Published 2026-01-12.
- How severe is CVE-2025-68656?
- Medium severity. CVSS v3 base score is 6.8 out of 10.