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    2 vulnerabilities by MrSteam

    CVE-2026-95699 (GCVE-0-2026-95699)

    Vulnerability from nvd – Published: 2026-09-24 20:39 – Updated: 2026-09-24 20:39
    VLAI
    Title
    MrSteam iSteamX Improper Isolation or Compartmentalization
    Summary
    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.
    Severity
    8.4 (High)
    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
    9.6 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
    CWE
    • CWE-653 - Improper isolation or compartmentalization
    Assigner
    References
    Impacted products
    Date Public
    2026-09-24 16:17
    Credits
    Darren Challis
    Show details on NVD website
    To clipboard 

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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "iSteamX application",
          "vendor": "MrSteam",
          "versions": [
            {
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              "version": "v1.3.42 (build 44)"
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          "vendor": "MrSteam",
          "versions": [
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            }
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      ],
      "credits": [
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          "type": "finder",
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        }
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      "descriptions": [
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
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            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
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            "availabilityImpact": "HIGH",
            "baseScore": 9.6,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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        },
        {
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        }
      ],
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    "assignerShortName": "icscert",
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    "dateReserved": "2026-09-22T14:36:39.739Z",
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}

    CVE-2026-95699 (GCVE-0-2026-95699)

    Vulnerability from cvelistv5 – Published: 2026-09-24 20:39 – Updated: 2026-09-24 20:39
    VLAI
    Title
    MrSteam iSteamX Improper Isolation or Compartmentalization
    Summary
    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.
    Severity
    8.4 (High)
    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
    9.6 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
    CWE
    • CWE-653 - Improper isolation or compartmentalization
    Assigner
    References
    Impacted products
    Date Public
    2026-09-24 16:17
    Credits
    Darren Challis
    Show details on NVD website
    To clipboard 

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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "iSteamX application",
          "vendor": "MrSteam",
          "versions": [
            {
              "status": "affected",
              "version": "v1.3.42 (build 44)"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "iSteamX Hub",
          "vendor": "MrSteam",
          "versions": [
            {
              "status": "affected",
              "version": "v4.2.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Darren Challis"
        }
      ],
      "datePublic": "2026-09-24T16:17:00.000Z",
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          ],
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
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            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
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        },
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.6,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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