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{"cisaActionDue": "2023-01-31", "cisaExploitAdd": "2023-01-10", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Microsoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*", "matchCriteriaId": "2A983693-C39E-424B-8A1E-BD7B3A199632", "versionEndExcluding": "10.0.10240.19685", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*", "matchCriteriaId": "960B3437-DF2C-4CF6-AF06-9AF1E6AC9EA5", "versionEndExcluding": "10.0.14393.5648", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "matchCriteriaId": "A7F8B54C-4564-497A-9786-876A516219C3", "versionEndExcluding": "10.0.17763.3887", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "9EC1EA32-6810-4092-BEBF-120FBE093A5B", "versionEndExcluding": "10.0.19042.2486", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "05BF289F-51FE-4CE5-8487-D909E4CA3D77", "versionEndExcluding": "10.0.19044.2486", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "127FA76C-101B-4DAB-9034-1B893016D06A", "versionEndExcluding": "10.0.19045.2486", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "84D221BE-D305-4BB8-ADAF-DEDFF7E35C8D", "versionEndExcluding": "10.0.22000.1455", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "3E62759B-9029-42E8-8807-1AC4C2D00401", "versionEndExcluding": "10.0.22621.1105", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*", "matchCriteriaId": "C6CE5198-C498-4672-AF4C-77AB4BE06C5C", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*", "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*", "matchCriteriaId": "D1FFC699-725E-4F6A-988D-228613256CA3", "versionEndExcluding": "10.0.14393.5648", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "matchCriteriaId": "7F9F1524-807A-49CC-9F15-B4967AF78E31", "versionEndExcluding": "10.0.17763.3887", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "matchCriteriaId": "D47581C0-F0DF-45D3-8BBF-B49E2172E01C", "versionEndExcluding": "10.0.20348.1487", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability"}, {"lang": "es", "value": "Vulnerabilidad de elevaci\u00f3n de privilegios de llamada a procedimiento local avanzado (ALPC) de Windows."}], "id": "CVE-2023-21674", "lastModified": "2025-10-30T19:16:50.850", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "secure@microsoft.com", "type": "Secondary"}]}, "published": "2023-01-10T22:15:16.307", "references": [{"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "secure@microsoft.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}