---
id: "CVE-2026-85079"
kind: "vulnerability"
aliases: ["CVE-2026-85079"]
title: "EmberZNet: malformed Simple_Desc_req response enables out-of-bounds write"
severity: "high"
cvss: 7.5
epss: 0.00305
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["embedded", "infrastructure", "iot", "zigbee"]
not_affected_if: ["ember-stack-newer-than-9.1.1", "no-zigbee-network"]
published_at: "2026-10-22T14:17:50+00:00"
first_seen_at: "2026-10-23T21:57:31+00:00"
updated_at: "2026-10-25T03:15:12+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85079", "first_seen_at": "2026-10-23T21:57:31+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-85079", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# EmberZNet: malformed Simple_Desc_req response enables out-of-bounds write

EmberZNet 9.1.1 and earlier mishandle a malformed Simple_Desc_req response, causing an out-of-bounds write. The description says this can lead to remote code execution on the affected device.

_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-2026-85079
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-85079

## From the sources

In EmberZNet 9.1.1 and earlier, a malformed Simple_Desc_req response can result in an out-of-bounds write potentially leading to remote code execution. This response must come from a device that has already joined the network, and the attacker must wait for a Simple_Desc_req before the attack can be performed.

---

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