{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66818", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-07-27T19:02:26.601Z", "datePublished": "2026-09-08T17:14:28.230Z", "dateUpdated": "2026-10-14T23:09:40.401Z"}, "containers": {"cna": {"title": "Microsoft SQL Server Elevation of Privilege Vulnerability", "datePublic": "2026-09-08T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*", "versionStartIncluding": "14.0.0", "versionEndExcluding": "14.0.2130.4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "versionStartIncluding": "15.0.0", "versionEndExcluding": "15.0.2190.7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*", "versionStartIncluding": "14.0.0", "versionEndExcluding": "14.0.3550.4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "versionStartIncluding": "16.0.0", "versionEndExcluding": "16.0.1200.5"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "versionStartIncluding": "17.0.1050.2", "versionEndExcluding": "17.0.1135.8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "versionStartIncluding": "15.0.0.0", "versionEndExcluding": "15.0.4490.9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "versionStartIncluding": "16.0.0.0", "versionEndExcluding": "16.0.4275.2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "versionStartIncluding": "17.0.0.0", "versionEndExcluding": "17.0.4085.5"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 (CU 31)", "platforms": ["x64-based Systems"], "versions": [{"version": "14.0.0", "lessThan": "14.0.3550.4", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 (GDR)", "platforms": ["x64-based Systems"], "versions": [{"version": "14.0.0", "lessThan": "14.0.2130.4", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (CU 32)", "platforms": ["x64-based Systems"], "versions": [{"version": "15.0.0.0", "lessThan": "15.0.4490.9", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (GDR)", "platforms": ["x64-based Systems"], "versions": [{"version": "15.0.0", "lessThan": "15.0.2190.7", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (CU 26)", "platforms": ["x64-based Systems"], "versions": [{"version": "16.0.0.0", "lessThan": "16.0.4275.2", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (GDR)", "platforms": ["x64-based Systems"], "versions": [{"version": "16.0.0", "lessThan": "16.0.1200.5", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 (CU8)", "platforms": ["x64-based Systems"], "versions": [{"version": "17.0.0.0", "lessThan": "17.0.4085.5", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)", "platforms": ["x64-based Systems"], "versions": [{"version": "17.0.1050.2", "lessThan": "17.0.1135.8", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Improper privilege management in SQL Server allows an authorized attacker to elevate privileges over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-269: Improper Privilege Management", "lang": "en-US", "type": "CWE", "cweId": "CWE-269"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-10-14T23:09:40.401Z"}, "references": [{"name": "Microsoft SQL Server Elevation of Privilege Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66818"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-66818", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-09T04:23:19.722489Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-09T10:05:24.861Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-66818", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-09T04:23:19.722489Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-09T09:59:43.783Z"}}], "cna": {"title": "Microsoft SQL Server Elevation of Privilege Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 (CU 31)", "versions": [{"status": "affected", "version": "14.0.0", "lessThan": "14.0.3550.4", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 (GDR)", "versions": [{"status": "affected", "version": "14.0.0", "lessThan": "14.0.2130.4", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (CU 32)", "versions": [{"status": "affected", "version": "15.0.0.0", "lessThan": "15.0.4490.9", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (GDR)", "versions": [{"status": "affected", "version": "15.0.0", "lessThan": "15.0.2190.7", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (CU 26)", "versions": [{"status": "affected", "version": "16.0.0.0", "lessThan": "16.0.4275.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (GDR)", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.0.1200.5", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 (CU8)", "versions": [{"status": "affected", "version": "17.0.0.0", "lessThan": "17.0.4085.5", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)", "versions": [{"status": "affected", "version": "17.0.1050.2", "lessThan": "17.0.1135.8", "versionType": "custom"}], "platforms": ["x64-based Systems"]}], "datePublic": "2026-09-08T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66818", "name": "Microsoft SQL Server Elevation of Privilege Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Improper privilege management in SQL Server allows an authorized attacker to elevate privileges over a network."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-269", "description": "CWE-269: Improper Privilege Management"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "14.0.2130.4", "versionStartIncluding": "14.0.0"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "15.0.2190.7", "versionStartIncluding": "15.0.0"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "14.0.3550.4", "versionStartIncluding": "14.0.0"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "16.0.1200.5", "versionStartIncluding": "16.0.0"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "17.0.1135.8", "versionStartIncluding": "17.0.1050.2"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "15.0.4490.9", "versionStartIncluding": "15.0.0.0"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "16.0.4275.2", "versionStartIncluding": "16.0.0.0"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "17.0.4085.5", "versionStartIncluding": "17.0.0.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-10-14T23:09:40.401Z"}}}, "cveMetadata": {"cveId": "CVE-2026-66818", "state": "PUBLISHED", "dateUpdated": "2026-10-14T23:09:40.401Z", "dateReserved": "2026-07-27T19:02:26.601Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-09-08T17:14:28.230Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2017 (CU 31)", "vendor": "Microsoft", "versions": [{"lessThan": "14.0.3550.4", "status": "affected", "version": "14.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2017 (GDR)", "vendor": "Microsoft", "versions": [{"lessThan": "14.0.2130.4", "status": "affected", "version": "14.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2019 (CU 32)", "vendor": "Microsoft", "versions": [{"lessThan": "15.0.4490.9", "status": "affected", "version": "15.0.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2019 (GDR)", "vendor": "Microsoft", "versions": [{"lessThan": "15.0.2190.7", "status": "affected", "version": "15.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2022 (CU 26)", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.4275.2", "status": "affected", "version": "16.0.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2022 (GDR)", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.1200.5", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2025 (CU8)", "vendor": "Microsoft", "versions": [{"lessThan": "17.0.4085.5", "status": "affected", "version": "17.0.0.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)", "vendor": "Microsoft", "versions": [{"lessThan": "17.0.1135.8", "status": "affected", "version": "17.0.1050.2", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*", "matchCriteriaId": "3207B09A-49E7-43D5-88B6-6ECF886B2E96", "versionEndExcluding": "14.0.2130.4", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*", "matchCriteriaId": "E409F829-1995-4F4F-9103-F718E929C482", "versionEndExcluding": "14.0.3550.4", "versionStartIncluding": "14.0.3006.16", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "matchCriteriaId": "799073C2-2213-4F34-8F07-D6C10AC00578", "versionEndExcluding": "15.0.2190.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "matchCriteriaId": "5517BD13-C554-4318-8D4F-FBCC90A628DB", "versionEndExcluding": "15.0.4490.9", "versionStartIncluding": "15.0.4003.23", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "matchCriteriaId": "21EA6405-BD37-4487-85FD-1B9CCCCF93F0", "versionEndExcluding": "16.0.1200.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "matchCriteriaId": "C76C3735-9E01-4F1A-98D3-29B9072C69D2", "versionEndExcluding": "16.0.4275.2", "versionStartIncluding": "16.0.4003.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "matchCriteriaId": "4117EB69-994D-4A8D-85EC-5AC12DF66DBD", "versionEndExcluding": "17.0.1135.8", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "matchCriteriaId": "1408DECC-BC22-4F27-8C49-C608FBF27FED", "versionEndExcluding": "17.0.4085.5", "versionStartIncluding": "17.0.4006.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper privilege management in SQL Server allows an authorized attacker to elevate privileges over a network."}], "id": "CVE-2026-66818", "lastModified": "2026-09-16T11:58:41.030", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66818", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-09T04:23:19.722489Z", "version": "2.0.3"}}]}, "published": "2026-09-08T18:18:20.143", "references": [{"source": "secure@microsoft.com", "tags": ["Vendor Advisory", "Patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66818"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}], "source": "secure@microsoft.com", "type": "Secondary"}]}

{}