---
id: CVE-2026-95699
title: >-
  Prior to 9/18/2026, the iSteamX mobile application's AWS policy could grant
  authenticated users access to wildcard MQTT topics, which can expose other
  users' device data and allow the attacker to start and stop other connected
  users' dev…
summary: >-
  Prior to 9/18/2026, the iSteamX mobile application's AWS policy could grant
  authenticated users access to wildcard MQTT topics, which can expose other
  users' device data and allow the attacker to start and stop other connected
  users' dev…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H'
cwe:
  - CWE-653
vendor: MrSteam
product: iSteamX application
affected:
  - isteamx_application v1.3.42 (build 44)
  - isteamx_hub v4.2.1
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:25:27.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-95699'
references:
  - url: >-
      https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-267-01.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.mrsteam.com/contactus/'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T20:51:40.268Z'
---

## Overview

Prior to 9/18/2026, the iSteamX mobile application's AWS policy could grant authenticated users access to wildcard MQTT topics, which can expose other users' device data and allow the attacker to start and stop other connected users' devices. This risked exposing user profile information and potential scalding due to unintended device activation.

## Remediation

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