---
id: "CVE-2026-89410"
kind: "vulnerability"
aliases: ["CVE-2026-89410"]
title: "Z-Wave SDK: malformed NCP SPI command leaks memory contents"
severity: "medium"
cvss: 5.1
epss: 0.00183
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["embedded", "infrastructure", "iot-firmware", "z-wave"]
not_affected_if: ["sdk-newer-than-8.1.1"]
published_at: "2026-10-22T14:17:51+00:00"
first_seen_at: "2026-10-23T21:57:31+00:00"
updated_at: "2026-10-25T04:28:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89410", "first_seen_at": "2026-10-23T21:57:31+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-89410", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# Z-Wave SDK: malformed NCP SPI command leaks memory contents

In Z-Wave SDK 8.1.1 and earlier, a malformed NCP SPI command triggers out-of-bounds reads. An attacker can leak sensitive information from device memory.

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

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-89410
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-89410

## From the sources

In Z-Wave SDK 8.1.1 and earlier, a malformed NCP SPI command can trigger out-of-bounds reads that leak sensitive information.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_