Access Control Vulnerability in iSteamX Mobile Application by MrSteam
CVE-2026-95699

8.4HIGH

Key Information:

Vendor

Mrsteam

Status
Isteamx Application
Isteamx Hub
Vendor
CVE Published:
24 September 2026

What is CVE-2026-95699?

The iSteamX mobile application has a vulnerability in its AWS policy that prematurely allows authenticated users to access wildcard MQTT topics. This oversight permits unauthorized retrieval of other users' device data and enables attackers to manipulate connected devices, potentially leading to unauthorized activation that can expose sensitive user profile information. This vulnerability poses significant risks to user privacy and device safety.

Affected Version(s)

iSteamX application v1.3.42 (build 44)

iSteamX Hub v4.2.1

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/cs...
https://www.mrsteam.com/contactus/

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Darren Challis
.