FKIE_CVE-2026-20484

Vulnerability from fkie_nvd - Published: 2026-08-03 03:16 - Updated: 2026-08-19 16:57
Summary
In TFA, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11053160; Issue ID: MSV-8004.
Impacted products
Vendor Product Version
mediatek mt8799_firmware -
mediatek mt8799 -
mediatek mt6739_firmware -
mediatek mt6739 -
mediatek mt6761_firmware -
mediatek mt6761 -
mediatek mt6765_firmware -
mediatek mt6765 -
mediatek mt6768_firmware -
mediatek mt6768 -
mediatek mt6781_firmware -
mediatek mt6781 -
mediatek mt6789_firmware -
mediatek mt6789 -
mediatek mt6833_firmware -
mediatek mt6833 -
mediatek mt6835_firmware -
mediatek mt6835 -
mediatek mt6853_firmware -
mediatek mt6853 -
mediatek mt6855_firmware -
mediatek mt6855 -
mediatek mt6877_firmware -
mediatek mt6877 -
mediatek mt6878_firmware -
mediatek mt6878 -
mediatek mt6879_firmware -
mediatek mt6879 -
mediatek mt6883_firmware -
mediatek mt6883 -
mediatek mt6885_firmware -
mediatek mt6885 -
mediatek mt6886_firmware -
mediatek mt6886 -
mediatek mt6889_firmware -
mediatek mt6889 -
mediatek mt6893_firmware -
mediatek mt6893 -
mediatek mt6895_firmware -
mediatek mt6895 -
mediatek mt6897_firmware -
mediatek mt6897 -
mediatek mt6899_firmware -
mediatek mt6899 -
mediatek mt6983_firmware -
mediatek mt6983 -
mediatek mt6985_firmware -
mediatek mt6985 -
mediatek mt6988_firmware -
mediatek mt6988 -
mediatek mt6989_firmware -
mediatek mt6989 -
mediatek mt6991_firmware -
mediatek mt6991 -
mediatek mt6993_firmware -
mediatek mt6993 -
mediatek mt8171_firmware -
mediatek mt8171 -
mediatek mt8188_firmware -
mediatek mt8188 -
mediatek mt8189_firmware -
mediatek mt8189 -
mediatek mt8390_firmware -
mediatek mt8390 -
mediatek mt8391_firmware -
mediatek mt8391 -
mediatek mt8668_firmware -
mediatek mt8668 -
mediatek mt8676_firmware -
mediatek mt8676 -
mediatek mt8678_firmware -
mediatek mt8678 -
mediatek mt8696_firmware -
mediatek mt8696 -
mediatek mt8792_firmware -
mediatek mt8792 -
mediatek mt8793_firmware -
mediatek mt8793 -

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      "affectedData": [
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          "defaultStatus": "unaffected",
          "product": "MediaTek chipset",
          "vendor": "MediaTek, Inc.",
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              "status": "affected",
              "version": "MT6739"
            },
            {
              "status": "affected",
              "version": "MT6761"
            },
            {
              "status": "affected",
              "version": "MT6765"
            },
            {
              "status": "affected",
              "version": "MT6768"
            },
            {
              "status": "affected",
              "version": "MT6781"
            },
            {
              "status": "affected",
              "version": "MT6789"
            },
            {
              "status": "affected",
              "version": "MT6833"
            },
            {
              "status": "affected",
              "version": "MT6835"
            },
            {
              "status": "affected",
              "version": "MT6853"
            },
            {
              "status": "affected",
              "version": "MT6855"
            },
            {
              "status": "affected",
              "version": "MT6877"
            },
            {
              "status": "affected",
              "version": "MT6878"
            },
            {
              "status": "affected",
              "version": "MT6879"
            },
            {
              "status": "affected",
              "version": "MT6883"
            },
            {
              "status": "affected",
              "version": "MT6885"
            },
            {
              "status": "affected",
              "version": "MT6886"
            },
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            {
              "status": "affected",
              "version": "MT6893"
            },
            {
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            },
            {
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            },
            {
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            },
            {
              "status": "affected",
              "version": "MT6983"
            },
            {
              "status": "affected",
              "version": "MT6985"
            },
            {
              "status": "affected",
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            },
            {
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            },
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              "status": "affected",
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            },
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            },
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            },
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            },
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            },
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            },
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            },
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            },
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            },
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            },
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            }
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  "cveTags": [],
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      "lang": "en",
      "value": "In TFA, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11053160; Issue ID: MSV-8004."
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  "id": "CVE-2026-20484",
  "lastModified": "2026-08-19T16:57:18.687",
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          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.4,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
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        "exploitabilityScore": 0.8,
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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              "technicalImpact": "partial"
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          "role": "CISA Coordinator",
          "timestamp": "2026-08-03T19:44:46.089761Z",
          "version": "2.0.3"
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  "published": "2026-08-03T03:16:43.540",
  "references": [
    {
      "source": "security@mediatek.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.mediatek.com/product-security-bulletin/August-2026"
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  "sourceIdentifier": "security@mediatek.com",
  "vulnStatus": "Analyzed",
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    {
      "description": [
        {
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          "value": "CWE-201"
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      "source": "security@mediatek.com",
      "type": "Secondary"
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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