What is CVE-2026-95699?

CVE-2026-95699 is a critical-severity vulnerability in Mrsteam Isteamx Application, classified under CWE-653. CVSS score: 9.6/10. Published 2026-09-24.

How severe is CVE-2026-95699?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Vulnerability in Mrsteam Isteamx Application

CVE-2026-95699

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.

Published 2026-09-24 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Mrsteam Isteamx Application — versions v1.3.42 (build 44)
Mrsteam Isteamx Hub — versions v4.2.1

Weakness classification (CWE)

CWE-653

References

Frequently asked questions

What is CVE-2026-95699?: CVE-2026-95699 is a critical-severity vulnerability in Mrsteam Isteamx Application, classified under CWE-653. CVSS score: 9.6/10. Published 2026-09-24.
How severe is CVE-2026-95699?: Critical severity. CVSS v3 base score is 9.6 out of 10.