CVE-2026-95699 iSteamX - Broken Access Control

iSteamX mobile application prior to 9/18/2026 contains a broken access control caused by AWS policy granting authenticated users access to wildcard MQTT topics, letting authenticated attackers expose user data and control other users' devices, exploit requires user authentication.

CVSS base score 9.6 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.30% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control, Information Disclosure, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
Published
24 September 2026
Updated
15 October 2026
Weakness
CWE-653

Vendor fix

Update AWS policy to restrict MQTT topic access to authorized users only or upgrade to the latest version after 9/18/2026.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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