« Back to list

CVE-2021-0655

Status: ModifiedMedium (6.7)—

In mdlactl driver, there is a possible memory corruption due to an incorrect bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS05673424; Issue ID: ALPS05673424.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Google — Android

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-0655",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 0.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@android.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "MT6873, MT6875, MT6883, MT6885, MT6889, MT6891, MT6893",
          "versions": [
            {
              "status": "affected",
              "version": "Android 10.0, 11.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-11-18T15:15:08.453",
  "references": [
    {
      "url": "https://corp.mediatek.com/product-security-bulletin/November-2021",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@android.com"
    },
    {
      "url": "https://corp.mediatek.com/product-security-bulletin/November-2021",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In mdlactl driver, there is a possible memory corruption due to an incorrect bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS05673424; Issue ID: ALPS05673424."
    },
    {
      "lang": "es",
      "value": "En mdlactl driver, se presenta una posible corrupción de memoria debido a una comprobación de límites incorrecta. Esto podría conllevar a una escalada de privilegios local con privilegios de ejecución System requeridos. No es requerida una interacción del usuario para su explotación. ID de parche: ALPS05673424; ID del Problema: ALPS05673424."
    }
  ],
  "lastModified": "2026-06-17T03:30:28.993",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D558D965-FA70-4822-A770-419E73BA9ED3"
            },
            {
              "criteria": "cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "109DD7FD-3A48-4C3D-8E1A-4433B98E1E64"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:mediatek:mt6873:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "F6B8A36E-C5FB-44AE-A1C3-50EBF4C68F6B"
            },
            {
              "criteria": "cpe:2.3:h:mediatek:mt6875:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "80BDC5EC-E822-4BC7-8C0D-E8AD8396E8FE"
            },
            {
              "criteria": "cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "15E2EC3F-9FB3-488B-B1C1-2793A416C755"
            },
            {
              "criteria": "cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "DD64413C-C774-4C4F-9551-89E1AA9469EE"
            },
            {
              "criteria": "cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "3B787DC3-8E5A-4968-B20B-37B6257FAAE2"
            },
            {
              "criteria": "cpe:2.3:h:mediatek:mt6891:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "D8E91CA4-CA5B-40D1-9A96-2B875104BCF4"
            },
            {
              "criteria": "cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "213B5C7F-D965-4312-9CDF-4F06FA77D401"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "security@android.com"
}