{"schemaVersion":3,"id":"CVE-2019-0703","aliases":[],"status":"published","duplicateOf":null,"title":"Microsoft Windows SMB Information Disclosure Vulnerability","description":"An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0704, CVE-2019-0821.","dates":{"published":"2019-04-08T23:41:43.000Z","modified":"2025-10-21T23:45:40.413Z","reserved":null,"kevAdded":["2022-05-23T00:00:00.000Z"],"kevDue":["2022-06-13T00:00:00.000Z"]},"cvss":{"headline":{"score":6.5,"severity":"medium","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:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4,"severity":"medium","vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0964,"percentile":0.95452,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.0964},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0964,"percentile":0.95452}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0964,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0964,"percentile":0.95452}]},"kev":{"state":"listed","entries":[{"source":"cisa","sourceLabel":"CISA","dateAdded":"2022-05-23T00:00:00.000Z","dueDate":"2022-06-13T00:00:00.000Z","requiredAction":"Apply updates per vendor instructions.","name":"Microsoft Windows SMB Information Disclosure Vulnerability","description":"An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, which could lead to information disclosure from the server.","notes":[{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2019-0703","label":"nvd.nist.gov/vuln/detail/CVE-2019-0703"}],"vendor":"Microsoft","product":"Windows","ransomware":false,"ransomwareUse":"Unknown","exploitationType":null}],"listedCount":1,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":true,"entry":{"source":"cisa","sourceLabel":"CISA","dateAdded":"2022-05-23T00:00:00.000Z","dueDate":"2022-06-13T00:00:00.000Z","requiredAction":"Apply updates per vendor instructions.","name":"Microsoft Windows SMB Information Disclosure Vulnerability","description":"An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, which could lead to information disclosure from the server.","notes":[{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2019-0703","label":"nvd.nist.gov/vuln/detail/CVE-2019-0703"}],"vendor":"Microsoft","product":"Windows","ransomware":false,"ransomwareUse":"Unknown","exploitationType":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":[],"affected":[{"vendor":"microsoft","product":"windows","name":"Windows","label":"windows","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7 for 32-bit Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"7 for x64-based Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"8.1 for 32-bit systems","noFixRecorded":false,"fixedIn":null},{"text":"8.1 for x64-based systems","noFixRecorded":false,"fixedIn":null},{"text":"RT 8.1","noFixRecorded":false,"fixedIn":null},{"text":"10 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1607 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1607 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1703 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1703 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1709 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1709 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1803 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1803 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1803 for ARM64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1809 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1709 for ARM64-based Systems","noFixRecorded":false,"fixedIn":null}],"versionsText":"7 for 32-bit Systems Service Pack 1 | 7 for x64-based Systems Service Pack 1 | 8.1 for 32-bit systems | 8.1 for x64-based systems | RT 8.1 | 10 for 32-bit Systems | 10 for x64-based Systems | 10 Version 1607 for 32-bit Systems | 10 Version 1607 for x64-based Systems | 10 Version 1703 for 32-bit Systems | 10 Version 1703 for x64-based Systems | 10 Version 1709 for 32-bit Systems | 10 Version 1709 for x64-based Systems | 10 Version 1803 for 32-bit Systems | 10 Version 1803 for x64-based Systems | 10 Version 1803 for ARM64-based Systems | 10 Version 1809 for 32-bit Systems | 10 Version 1709 for ARM64-based Systems","eol":{"isEol":true,"eolDate":"2016-01-12T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"8","label":"8","eolFrom":"2016-01-12T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"6.2.9200"},"product":{"name":"windows","label":"Microsoft Windows","category":"os"}},"hubHref":"/vendor/microsoft/windows"},{"vendor":"microsoft","product":"windows_10_1507","name":"windows 10 1507","label":"windows_10_1507","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_10_1507"},{"vendor":"microsoft","product":"windows_10_1607","name":"windows 10 1607","label":"windows_10_1607","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1703","name":"windows 10 1703","label":"windows_10_1703","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_10_1703"},{"vendor":"microsoft","product":"windows_10_1709","name":"windows 10 1709","label":"windows_10_1709","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_10_1709"},{"vendor":"microsoft","product":"windows_10_1803","name":"windows 10 1803","label":"windows_10_1803","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_10_1803"},{"vendor":"microsoft","product":"windows_10_1809","name":"windows 10 1809","label":"windows_10_1809","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_10_1809"},{"vendor":"microsoft","product":"windows_7","name":"windows 7","label":"windows_7","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_7"},{"vendor":"microsoft","product":"windows_8.1","name":"windows 8.1","label":"windows_8.1","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_81"},{"vendor":"microsoft","product":"windows_rt_8.1","name":"windows rt 8.1","label":"windows_rt_8.1","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_rt_81"},{"vendor":"microsoft","product":"windows_server","name":"windows server","label":"windows_server","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"2008 R2 for x64-based Systems Service Pack 1 (Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"n/a","noFixRecorded":false,"fixedIn":null}],"versionsText":"2008 R2 for x64-based Systems Service Pack 1 (Core installation) | n/a","eol":null,"hubHref":"/vendor/microsoft/windows_server"},{"vendor":"microsoft","product":"windows_server_1709","name":"windows server 1709","label":"windows_server_1709","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_server_1709"},{"vendor":"microsoft","product":"windows_server_1803","name":"windows server 1803","label":"windows_server_1803","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_server_1803"},{"vendor":"microsoft","product":"windows_server_2008","name":"windows server 2008","label":"windows_server_2008","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"r2:sp1","noFixRecorded":false,"fixedIn":null}],"versionsText":"na | r2:sp1","eol":null,"hubHref":"/vendor/microsoft/windows_server_2008"},{"vendor":"microsoft","product":"windows_server_2012","name":"windows server 2012","label":"windows_server_2012","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"na | r2","eol":null,"hubHref":"/vendor/microsoft/windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016","name":"windows server 2016","label":"windows_server_2016","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019","name":"windows server 2019","label":"windows_server_2019","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_server_2019"}],"affectedCount":17,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0703","label":"portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0703","hostname":"portal.msrc.microsoft.com","tags":["X Refsource CONFIRM","Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0703","label":"www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0703","hostname":"www.cisa.gov","tags":["Government Resource","US Government Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2019-04-08T23:41:43.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"kev-added","date":"2022-05-23T00:00:00.000Z","label":"Added to CISA KEV","detail":"Microsoft Windows SMB Information Disclosure Vulnerability","source":"cisa"},{"kind":"kev-due","date":"2022-06-13T00:00:00.000Z","label":"CISA remediation due","detail":"Apply updates per vendor instructions.","source":"cisa"},{"kind":"modified","date":"2025-10-21T23:45:40.413Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":85,"level":"critical","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:51:58.043Z","stale":false,"partial":false}}