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CVE-2023-21267

Status: ModifiedMedium (5.5)—

In multiple functions of KeyguardViewMediator.java, there is a possible way to bypass lockdown mode with screen pinning due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

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)

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{
  "id": "CVE-2023-21267",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-21267",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-05-15T14:54:32.382055Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@android.com",
      "affectedData": [
        {
          "vendor": "Google",
          "product": "Android",
          "versions": [
            {
              "status": "affected",
              "version": "14"
            },
            {
              "status": "affected",
              "version": "13"
            },
            {
              "status": "affected",
              "version": "12L"
            },
            {
              "status": "affected",
              "version": "12"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2023-08-14T21:15:12.243",
  "references": [
    {
      "url": "https://android.googlesource.com/platform/frameworks/base/+/cb7e9c7549a2a076ec00db15e3da0d21b31b0b1c",
      "source": "security@android.com"
    },
    {
      "url": "https://android.googlesource.com/platform/frameworks/base/+/cecddcd865f72d76f7aacb1cf4479365847299f9",
      "source": "security@android.com"
    },
    {
      "url": "https://android.googlesource.com/platform/frameworks/base/+/e205cd30e91d8eeadf562140c34c306ebf7d6394",
      "source": "security@android.com"
    },
    {
      "url": "https://source.android.com/security/bulletin/2024-04-01",
      "source": "security@android.com"
    },
    {
      "url": "https://android.googlesource.com/platform/frameworks/base/+/cb7e9c7549a2a076ec00db15e3da0d21b31b0b1c",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://android.googlesource.com/platform/frameworks/base/+/cecddcd865f72d76f7aacb1cf4479365847299f9",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://android.googlesource.com/platform/frameworks/base/+/e205cd30e91d8eeadf562140c34c306ebf7d6394",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://source.android.com/security/bulletin/2024-04-01",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In multiple functions of KeyguardViewMediator.java, there is a possible way to bypass lockdown mode with screen pinning due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation."
    }
  ],
  "lastModified": "2026-06-17T05:32:12.617",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:google:android:11.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F120D280-287A-474F-9DC5-CBBC4B4C7237"
            },
            {
              "criteria": "cpe:2.3:o:google:android:12.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "16820CAF-0A8A-45C8-B5A8-979EA0407389"
            },
            {
              "criteria": "cpe:2.3:o:google:android:12.1:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F3B54CC6-C4CB-4BBD-AADC-BC7A80F4F621"
            },
            {
              "criteria": "cpe:2.3:o:google:android:13.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "08A26AC2-409E-499A-B0D5-8C2B5038947D"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@android.com"
}