cve-2023-21674

HIGH CVSS 8.8 opencve
Description

Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability

Timeline
Published
2023-01-10 22:15 UTC
Last Modified
2026-06-17
CVSS Details

CVSS details not available.

Affected Products

No product information available.

Weaknesses (CWE)
CWE-416
CVSS metrics
Version Base Severity Vector Exploitability Impact Source
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C mitre
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H nvd
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C opencve
References

No references available.

Linked Vulnerabilities

No linked vulnerabilities found.

{
  "advisories": [
    {
      "id": "EUVD-2023-25841",
      "source": "euvd",
      "title": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
      "url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-25841"
    }
  ],
  "cve": "CVE-2023-21674",
  "epss": {
    "score": 0.40987
  },
  "kev": {
    "dateAdded": "2023-01-10T00:00:00+00:00",
    "dueDate": "2023-01-31T00:00:00+00:00"
  },
  "mitre": {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_11_21H2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_11_22H2:*:*:*:*:*:*:arm64:*",
      "cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:x86:*",
      "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
      "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*"
    ],
    "created": "2023-01-10T00:00:00+00:00",
    "description": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {
        "score": 8.8,
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C"
      },
      "cvssV4_0": {}
    },
    "mitre_repo_path": "cves/2023/21xxx/CVE-2023-21674.json",
    "references": [
      "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674"
    ],
    "title": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
    "updated": "2025-10-21T23:15:28.774000+00:00",
    "vendors": [
      "microsoft",
      "microsoft$PRODUCT$windows_10_1507",
      "microsoft$PRODUCT$windows_10_1607",
      "microsoft$PRODUCT$windows_10_1809",
      "microsoft$PRODUCT$windows_10_20H2",
      "microsoft$PRODUCT$windows_10_21H2",
      "microsoft$PRODUCT$windows_10_22H2",
      "microsoft$PRODUCT$windows_11_21H2",
      "microsoft$PRODUCT$windows_11_22H2",
      "microsoft$PRODUCT$windows_8.1",
      "microsoft$PRODUCT$windows_server_2012_R2",
      "microsoft$PRODUCT$windows_server_2016",
      "microsoft$PRODUCT$windows_server_2019",
      "microsoft$PRODUCT$windows_server_2022"
    ],
    "weaknesses": [
      "CWE-416"
    ]
  },
  "nvd": {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
      "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*"
    ],
    "created": "2023-01-10T22:15:16.307000+00:00",
    "description": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {
        "score": 8.8,
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
      },
      "cvssV4_0": {}
    },
    "nvd_repo_path": "2023/CVE-2023-21674.json",
    "references": [
      "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674",
      "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"
    ],
    "title": null,
    "updated": "2026-06-17T05:33:36.547000+00:00",
    "vendors": [
      "microsoft",
      "microsoft$PRODUCT$windows_10_1507",
      "microsoft$PRODUCT$windows_10_1607",
      "microsoft$PRODUCT$windows_10_1809",
      "microsoft$PRODUCT$windows_10_20h2",
      "microsoft$PRODUCT$windows_10_21h2",
      "microsoft$PRODUCT$windows_10_22h2",
      "microsoft$PRODUCT$windows_11_21h2",
      "microsoft$PRODUCT$windows_11_22h2",
      "microsoft$PRODUCT$windows_rt_8.1",
      "microsoft$PRODUCT$windows_server_2012",
      "microsoft$PRODUCT$windows_server_2016",
      "microsoft$PRODUCT$windows_server_2019",
      "microsoft$PRODUCT$windows_server_2022"
    ],
    "weaknesses": [
      "CWE-416"
    ]
  },
  "opencve": {
    "changes": [
      {
        "created": "2025-01-01T00:45:00+00:00",
        "data": [
          {
            "details": {
              "added": [],
              "removed": [
                "cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.19685:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.19685:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.5648:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.5648:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.3887:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.3887:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.3887:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.2486:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.2486:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.2486:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.2486:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.2486:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_22H2:10.0.19045.2486:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_10_22H2:10.0.19045.2486:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_10_22H2:10.0.19045.2486:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_11_21H2:10.0.22000.1455:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_11_21H2:10.0.22000.1455:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_11_22H2:10.0.22621.1105:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_11_22H2:10.0.22621.1105:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_8.1:6.3.9600.20778:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_8.1:6.3.9600.20778:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_rt_8.1:6.3.9600.20778:*:*:*:*:*:*:*",
                "cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20778:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.5648:*:*:*:*:*:*:*",
                "cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.3887:*:*:*:*:*:*:*",
                "cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.1487:*:*:*:*:*:*:*"
              ]
            },
            "type": "cpes"
          },
          {
            "details": {
              "added": [],
              "removed": [
                "microsoft$PRODUCT$windows_10_20H2",
                "microsoft$PRODUCT$windows_10_21H2",
                "microsoft$PRODUCT$windows_10_22H2",
                "microsoft$PRODUCT$windows_11_21H2",
                "microsoft$PRODUCT$windows_11_22H2",
                "microsoft$PRODUCT$windows_8.1",
                "microsoft$PRODUCT$windows_server_2012_R2"
              ]
            },
            "type": "vendors"
          }
        ],
        "id": "7b9a0027-331d-49f6-9485-d4d921182944"
      },
      {
        "created": "2025-01-01T01:15:00+00:00",
        "data": [
          {
            "details": {
              "added": {
                "kev": {
                  "dateAdded": "2023-01-10"
                },
                "ssvc": {
                  "options": {
                    "Automatable": "no",
                    "Exploitation": "active",
                    "Technical Impact": "total"
                  },
                  "version": "2.0.3"
                }
              },
              "removed": {},
              "updated": {}
            },
            "type": "metrics"
          }
        ],
        "id": "d46181d4-efd4-45b9-a408-2c90fd7da845"
      },
      {
        "created": "2025-10-21T19:30:00+00:00",
        "data": [
          {
            "details": {
              "added": [
                "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"
              ],
              "removed": []
            },
            "type": "references"
          }
        ],
        "id": "b05212fb-9094-484f-8f19-8b9525edb1b4"
      },
      {
        "created": "2025-10-21T20:30:00+00:00",
        "data": [
          {
            "details": {
              "added": [],
              "removed": [
                "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"
              ]
            },
            "type": "references"
          }
        ],
        "id": "8ff1a4f8-a396-49d3-89d5-b1fc6b1698e5"
      },
      {
        "created": "2025-10-21T23:15:00+00:00",
        "data": [
          {
            "details": {
              "added": [
                "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"
              ],
              "removed": []
            },
            "type": "references"
          }
        ],
        "id": "8931cda1-4b11-47cd-b4e8-90e2ebb84fd3"
      },
      {
        "created": "2026-02-25T16:45:00+00:00",
        "data": [
          {
            "details": [
              "microsoft$PRODUCT$windows_10_20H2",
              "microsoft$PRODUCT$windows_10_21H2",
              "microsoft$PRODUCT$windows_10_22H2",
              "microsoft$PRODUCT$windows_11_21H2",
              "microsoft$PRODUCT$windows_11_22H2",
              "microsoft$PRODUCT$windows_8.1",
              "microsoft$PRODUCT$windows_server_2012_R2"
            ],
            "type": "first_time"
          },
          {
            "details": {
              "added": [
                "cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_11_21H2:*:*:*:*:*:*:x64:*",
                "cpe:2.3:o:microsoft:windows_11_22H2:*:*:*:*:*:*:arm64:*",
                "cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:x86:*",
                "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*"
              ],
              "removed": []
            },
            "type": "cpes"
          },
          {
            "details": {
              "added": [
                "microsoft$PRODUCT$windows_10_20H2",
                "microsoft$PRODUCT$windows_10_21H2",
                "microsoft$PRODUCT$windows_10_22H2",
                "microsoft$PRODUCT$windows_11_21H2",
                "microsoft$PRODUCT$windows_11_22H2",
                "microsoft$PRODUCT$windows_8.1",
                "microsoft$PRODUCT$windows_server_2012_R2"
              ],
              "removed": []
            },
            "type": "vendors"
          }
        ],
        "id": "2cf9db88-d007-41e0-8aab-d23a848662f4"
      }
    ],
    "cpes": {
      "data": [
        "cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_11_21H2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_11_22H2:*:*:*:*:*:*:arm64:*",
        "cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:x86:*",
        "cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
        "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*"
      ],
      "providers": [
        "mitre",
        "nvd"
      ]
    },
    "created": {
      "data": "2023-01-10T00:00:00+00:00",
      "provider": "mitre"
    },
    "description": {
      "data": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
      "provider": "mitre"
    },
    "metrics": {
      "cvssV2_0": {
        "data": {},
        "provider": null
      },
      "cvssV3_0": {
        "data": {},
        "provider": null
      },
      "cvssV3_1": {
        "data": {
          "score": 8.8,
          "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C"
        },
        "provider": "mitre"
      },
      "cvssV4_0": {
        "data": {},
        "provider": null
      },
      "epss": {
        "data": {
          "score": 0.40987
        },
        "provider": "first"
      },
      "kev": {
        "data": {
          "dateAdded": "2023-01-10T00:00:00+00:00",
          "dueDate": "2023-01-31T00:00:00+00:00"
        },
        "provider": "cisa"
      },
      "ssvc": {
        "data": {
          "options": {
            "Automatable": "no",
            "Exploitation": "active",
            "Technical Impact": "total"
          },
          "version": "2.0.3"
        },
        "provider": "vulnrichment"
      },
      "threat_severity": {
        "data": null,
        "provider": null
      }
    },
    "references": {
      "data": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"
      ],
      "providers": [
        "mitre",
        "nvd",
        "vulnrichment"
      ]
    },
    "title": {
      "data": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
      "provider": "mitre"
    },
    "updated": {
      "data": "2025-10-30T19:16:50.850000+00:00",
      "provider": "nvd"
    },
    "vendors": {
      "data": [
        "microsoft",
        "microsoft$PRODUCT$windows_10_1507",
        "microsoft$PRODUCT$windows_10_1607",
        "microsoft$PRODUCT$windows_10_1809",
        "microsoft$PRODUCT$windows_10_20H2",
        "microsoft$PRODUCT$windows_10_20h2",
        "microsoft$PRODUCT$windows_10_21H2",
        "microsoft$PRODUCT$windows_10_21h2",
        "microsoft$PRODUCT$windows_10_22H2",
        "microsoft$PRODUCT$windows_10_22h2",
        "microsoft$PRODUCT$windows_11_21H2",
        "microsoft$PRODUCT$windows_11_21h2",
        "microsoft$PRODUCT$windows_11_22H2",
        "microsoft$PRODUCT$windows_11_22h2",
        "microsoft$PRODUCT$windows_8.1",
        "microsoft$PRODUCT$windows_rt_8.1",
        "microsoft$PRODUCT$windows_server_2012",
        "microsoft$PRODUCT$windows_server_2012_R2",
        "microsoft$PRODUCT$windows_server_2016",
        "microsoft$PRODUCT$windows_server_2019",
        "microsoft$PRODUCT$windows_server_2022"
      ],
      "providers": [
        "mitre",
        "nvd"
      ]
    },
    "weaknesses": {
      "data": [
        "CWE-416"
      ],
      "providers": [
        "mitre",
        "nvd"
      ]
    }
  },
  "vulnrichment": {
    "cpes": [],
    "created": "2023-01-10T00:00:00+00:00",
    "description": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {},
      "cvssV4_0": {},
      "kev": {
        "dateAdded": "2023-01-10"
      },
      "ssvc": {
        "options": {
          "Automatable": "no",
          "Exploitation": "active",
          "Technical Impact": "total"
        },
        "version": "2.0.3"
      }
    },
    "references": [
      "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"
    ],
    "title": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability",
    "updated": "2024-05-29T14:35:00.886000+00:00",
    "vendors": [],
    "vulnrichment_repo_path": "2023/21xxx/CVE-2023-21674.json",
    "weaknesses": []
  }
}
Enrichment data
EPSS
View JSON Download
CISA KEV
View JSON Download
Aggregated bundle (all enrichments)
View JSON API Download bundle
View JSON API Download JSON