CVE-2025-68622: Espressif ESP-IDF USB Host UVC Class Driver has a stack buffer overflow in UVC descriptor printing

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-12 · updated 2026-06-17
Weakness: CWE-121

Description

Espressif ESP-IDF USB Host UVC Class Driver allows video streaming from USB cameras. Prior to 2.4.0, a vulnerability in the esp-usb UVC host implementation allows a malicious USB Video Class (UVC) device to trigger a stack buffer overflow during configuration-descriptor parsing. When UVC configuration-descriptor printing is enabled, the host prints detailed descriptor information provided by the connected USB device. A specially crafted UVC descriptor may advertise an excessively large length. Because this value is not validated before being copied into a fixed-size stack buffer, an attacker can overflow the buffer and corrupt memory. This vulnerability is fixed in 2.4.0.

Affected products

espressif Usb Host Uvc Class Driver: before 2.4.0 — fixed in 2.4.0

How to fix

Upgrade to a fixed version: espressif Usb Host Uvc Class Driver 2.4.0. Check the vendor advisory for mitigations.

References

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