CVE-2026-20456 (GCVE-0-2026-20456)

Vulnerability from cvelistv5 – Published: 2026-06-01 03:20 – Updated: 2026-06-01 03:20
VLAI
Summary
In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.
Severity
No CVSS data available.
CWE
Assigner
Impacted products
Vendor Product Version
MediaTek, Inc. MediaTek chipset Affected: MT7902
Affected: MT7920
Affected: MT7921
Affected: MT7922
Affected: MT7925
Affected: MT7927
Create a notification for this product.
Show details on NVD website

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "MediaTek chipset",
          "vendor": "MediaTek, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "MT7902"
            },
            {
              "status": "affected",
              "version": "MT7920"
            },
            {
              "status": "affected",
              "version": "MT7921"
            },
            {
              "status": "affected",
              "version": "MT7922"
            },
            {
              "status": "affected",
              "version": "MT7925"
            },
            {
              "status": "affected",
              "version": "MT7927"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T03:20:14.379Z",
        "orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
        "shortName": "MediaTek"
      },
      "references": [
        {
          "url": "https://corp.mediatek.com/product-security-bulletin/June-2026"
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
    "assignerShortName": "MediaTek",
    "cveId": "CVE-2026-20456",
    "datePublished": "2026-06-01T03:20:14.379Z",
    "dateReserved": "2025-11-03T01:30:59.014Z",
    "dateUpdated": "2026-06-01T03:20:14.379Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20456\",\"sourceIdentifier\":\"security@mediatek.com\",\"published\":\"2026-06-01T04:16:22.283\",\"lastModified\":\"2026-06-01T04:16:22.283\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.\"}],\"metrics\":{},\"weaknesses\":[{\"source\":\"security@mediatek.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"references\":[{\"url\":\"https://corp.mediatek.com/product-security-bulletin/June-2026\",\"source\":\"security@mediatek.com\"}]}}"
  }
}


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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

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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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