---
id: CVE-2026-85079
title: Out-of-bounds write in Zigbee Simple_Desc_req handling
summary: >-
  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 at…
severity: high
cvss: 7.5
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-121
vendor: Silicon Labs
product: EmberZNet
affected:
  - EmberZNet <= 9.1.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-22T18:26:02.474867Z'
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T19:00:32.213Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-85079'
references:
  - url: >-
      https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000589.md
tags:
  - cve.org
ingestedAt: '2026-10-22T22:00:50.375Z'
---

## Overview

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.

## Affected

- `EmberZNet <= 9.1.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.