CVE-2026-95699

MrSteam iSteamX Improper Isolation or Compartmentalization

Published Sep 24, 2026 CVSS 4.0 · 8.4 High EPSS < 1% KEV · Not listed
Description
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

Vendor Solution

The vendor has implemented countermeasures to mitigate this vulnerability and is in effect as of 9/18/2026. Affected users are encouraged to contact them for more information at ( https://www.mrsteam.com/contactus/ ).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mrsteam
Mrsteam isteamx Application
Mrsteam isteamx Hub
Vendors & Products Mrsteam
Mrsteam isteamx Application
Mrsteam isteamx Hub
Type Values Removed Values Added
Description 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.
Title MrSteam iSteamX Improper Isolation or Compartmentalization
Weaknesses CWE-653
References
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H'}

cvssV4_0

{'score': 8.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Sep 25, 2026, 4:16 PM
Reserved
Sep 22, 2026, 2:36 PM
Status
Deferred
Published
Sep 24, 2026, 9:18 PM
Modified
Sep 25, 2026, 5:17 PM