---
id: "CVE-2026-102739"
kind: "vulnerability"
aliases: ["CVE-2026-102739"]
title: "ESPectre: crafted NPZ dataset runs code when analysis tools load it"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["esp32", "espectre", "micro-espectre", "numpy", "other", "python"]
not_affected_if: ["no-analysis-tools-run", "only-trusted-datasets", "version-3.0.0-rc1-or-later"]
published_at: "2026-11-05T17:17:32+00:00"
first_seen_at: "2026-11-05T17:40:02+00:00"
updated_at: "2026-11-05T17:42:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102739", "first_seen_at": "2026-11-05T17:40:02+00:00"}]
exploit_sources: []
---

# ESPectre: crafted NPZ dataset runs code when analysis tools load it

ESPectre's Micro-ESPectre analysis tools load NPZ datasets with NumPy pickle support enabled, before version 3.0.0-rc1. A malicious dataset with an object-typed array can run attacker-chosen code as the developer who runs the tool.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Micro-ESPectre version in use; affected releases are below `3.0.0-rc1`.
- Look for `.npz` files under `micro-espectre/data` that contain object-typed arrays.
- Review `tools/csi_utils.py` and the direct loader for NumPy calls that allow pickle loading.

## Fix

- Move Micro-ESPectre to `3.0.0-rc1` or later.

## Timeline

- 2026-11-05T17:40:02+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-102739

## Documents

- [advisory] Vendor advisory: github.com https://github.com/francescopace/espectre/security/advisories/GHSA-g96x-h6rg-cqq3
- [fix] Patch: github.com https://github.com/francescopace/espectre/commit/adf495ceed41840497347f0196ba4a6968fc4ee1
- [fix] Release notes: github.com https://github.com/francescopace/espectre/releases/tag/3.0.0-rc1

## From the sources

ESPectre is a Wi-Fi motion sensing platform for ESP32. Prior to 3.0.0-rc1, Micro-ESPectre analysis tools, including tools/6_optimize_filter_params.py, tools/1_analyze_raw_data.py, and tools/10_train_ml_model.py, load NPZ datasets with NumPy pickle support enabled through micro-espectre/tools/csi_utils.py and a direct loader. A malicious dataset contributor or pull-request author can place an object-typed array in a .npz file under micro-espectre/data, causing pickle-controlled code to execute as the maintainer or developer when a documented analysis tool accesses the field. This issue is fixed in version 3.0.0-rc1.

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