Espressif esp-usb up to 2.3.x USB Video Class Device stack-based overflow

Summaryinfo

A vulnerability was found in Espressif esp-usb up to 2.3.x. It has been rated as critical. This issue affects some unknown processing of the component USB Video Class Device Handler. The manipulation leads to stack-based overflow. This vulnerability is uniquely identified as CVE-2025-68622. It is possible to launch the attack on the physical device. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Espressif esp-usb up to 2.3.x. It has been rated as critical. This issue affects an unknown function of the component USB Video Class Device Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-68622 since 12/19/2025. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.4.0 eliminates this vulnerability. Applying the patch 77a38b15a17f6e3c7aeb620eb4aeaf61d5194cc0 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-206283). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Espressif

Name

• esp-usb

Version

• 2.0
• 2.1
• 2.2
• 2.3

License

• open-source

Website

• Product: https://github.com/espressif/esp-usb/

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Be aware that VulDB is the high quality source for vulnerability data.

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