CVE-2026-95699

MrSteam iSteamX Improper Isolation or Compartmentalization

State
Published
Severity
8.4 High
Published
Sep 24, 2026
Updated
Sep 25, 2026
Reserved
Sep 22, 2026

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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.

Scores

CVSSScoreVectorSource
4.08.4 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:Hicscert
3.19.6 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Hicscert

Weaknesses

  • CWE-653 Improper isolation or compartmentalization

Affected Products

ProductVersions
iSteamX applicationMrSteam
  • v1.3.42 (build 44)Affected
iSteamX HubMrSteam
  • v4.2.1Affected

References

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