{"schemaVersion":3,"id":"CVE-2026-77483","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Weak authentication in SQL Server allows an authorized attacker to elevate privileges over a network.","dates":{"published":"2026-09-08T17:18:12.919Z","modified":"2026-10-14T23:13:36.014Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00778,"percentile":0.55135,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.25199999999999995,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00526},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00538,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00538,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00778,"percentile":0.55135}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00526,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00778,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00778,"percentile":0.55135}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-1390","name":"Weak Authentication","description":"The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/1390.html"}],"affected":[{"vendor":"microsoft","product":"microsoft sql server 2017 (cu 31)","name":"Microsoft SQL Server 2017 (CU 31)","label":"microsoft sql server 2017 (cu 31)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 14.0.0, < 14.0.3550.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 14.0.0, < 14.0.3550.4","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2017_cu_31"},{"vendor":"microsoft","product":"microsoft sql server 2017 (gdr)","name":"Microsoft SQL Server 2017 (GDR)","label":"microsoft sql server 2017 (gdr)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 14.0.0, < 14.0.2130.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 14.0.0, < 14.0.2130.4","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2017_gdr"},{"vendor":"microsoft","product":"microsoft sql server 2019 (cu 32)","name":"Microsoft SQL Server 2019 (CU 32)","label":"microsoft sql server 2019 (cu 32)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 15.0.0.0, < 15.0.4490.9","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.0.0.0, < 15.0.4490.9","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2019_cu_32"},{"vendor":"microsoft","product":"microsoft sql server 2019 (gdr)","name":"Microsoft SQL Server 2019 (GDR)","label":"microsoft sql server 2019 (gdr)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 15.0.0, < 15.0.2190.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.0.0, < 15.0.2190.7","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2019_gdr"},{"vendor":"microsoft","product":"microsoft sql server 2022 (cu 26)","name":"Microsoft SQL Server 2022 (CU 26)","label":"microsoft sql server 2022 (cu 26)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0.0, < 16.0.4275.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0.0, < 16.0.4275.2","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2022_cu_26"},{"vendor":"microsoft","product":"microsoft sql server 2022 (gdr)","name":"Microsoft SQL Server 2022 (GDR)","label":"microsoft sql server 2022 (gdr)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0, < 16.0.1200.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0, < 16.0.1200.5","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2022_gdr"},{"vendor":"microsoft","product":"microsoft sql server 2025 (cu8)","name":"Microsoft SQL Server 2025 (CU8)","label":"microsoft sql server 2025 (cu8)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 17.0.0.0, < 17.0.4085.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 17.0.0.0, < 17.0.4085.5","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2025_cu8"},{"vendor":"microsoft","product":"microsoft sql server 2025 for x64-based systems (gdr)","name":"Microsoft SQL Server 2025 for x64-based Systems (GDR)","label":"microsoft sql server 2025 for x64-based systems (gdr)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 17.0.1050.2, < 17.0.1135.8","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 17.0.1050.2, < 17.0.1135.8","eol":null,"hubHref":"/vendor/microsoft/microsoft_sql_server_2025_for_x64-based_systems_gdr"},{"vendor":"microsoft","product":"sql_server_2017","name":"sql server 2017","label":"sql_server_2017","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 14.0.2130.4","noFixRecorded":false,"fixedIn":null},{"text":"≥ 14.0.3006.16, < 14.0.3550.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 14.0.2130.4 | ≥ 14.0.3006.16, < 14.0.3550.4","eol":null,"hubHref":"/vendor/microsoft/sql_server_2017"},{"vendor":"microsoft","product":"sql_server_2019","name":"sql server 2019","label":"sql_server_2019","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 15.0.2190.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 15.0.4003.23, < 15.0.4490.9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 15.0.2190.7 | ≥ 15.0.4003.23, < 15.0.4490.9","eol":null,"hubHref":"/vendor/microsoft/sql_server_2019"},{"vendor":"microsoft","product":"sql_server_2022","name":"sql server 2022","label":"sql_server_2022","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 16.0.1200.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 16.0.4003.1, < 16.0.4275.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 16.0.1200.5 | ≥ 16.0.4003.1, < 16.0.4275.2","eol":null,"hubHref":"/vendor/microsoft/sql_server_2022"},{"vendor":"microsoft","product":"sql_server_2025","name":"sql server 2025","label":"sql_server_2025","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 17.0.1135.8","noFixRecorded":false,"fixedIn":null},{"text":"≥ 17.0.4006.2, < 17.0.4085.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 17.0.1135.8 | ≥ 17.0.4006.2, < 17.0.4085.5","eol":null,"hubHref":"/vendor/microsoft/sql_server_2025"}],"affectedCount":12,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77483","label":"msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77483","hostname":"msrc.microsoft.com","tags":["Vendor Advisory","Patch"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-08T17:18:12.919Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-14T23:13:36.014Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T17:25:07.931Z","stale":false,"partial":false}}