---
id: CVE-2026-85080
title: Authenticated Denial-of-Service in Zigbee GetGroupMembership Handling
summary: >-
  In EmberZNet 9.1.1 and earlier, a malformed GetGroupMembership message can
  result in an out-of-bounds write leading to a crash. A limited number of
  values can be written using this vulnerability, so no route to remote code
  execution was …
severity: medium
cvss: 6
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/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: partial
  timestamp: '2026-10-23T10:49:22.640632Z'
published: '2026-10-22'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T10:56:10.233Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-85080'
references:
  - url: >-
      https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000590.md
tags:
  - cve.org
ingestedAt: '2026-10-22T22:00:50.269Z'
---

## Overview

In EmberZNet 9.1.1 and earlier, a malformed GetGroupMembership message can result in an out-of-bounds write leading to a crash. A limited number of values can be written using this vulnerability, so no route to remote code execution was observed. These messages must come from a device that has already joined the network. Only devices supporting the Group Cluster are impacted.

## Affected

- `EmberZNet <= 9.1.1`

## Remediation

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