{"schemaVersion":3,"id":"CVE-2019-4551","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.","dates":{"published":"2020-02-04T16:45:36.361Z","modified":"2024-09-16T23:46:52.622Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/C:L/UI:N/PR:N/S:U/AV:N/AC:L/A:N/I:N/E:U/RC:C/RL:O","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.0/C:L/UI:N/PR:N/S:U/AV:N/AC:L/A:N/I:N/E:U/RC:C/RL:O","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01278,"percentile":0.69735,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01278},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01278,"percentile":0.69735}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01278,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01278,"percentile":0.69735}]},"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-306","name":"Missing Authentication for Critical Function","description":"The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/306.html"}],"affected":[{"vendor":"ibm","product":"security_directory_server","name":"security directory server","label":"security_directory_server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"6.4.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.4.0.0, < 6.4.0.20","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.4.0 | ≥ 6.4.0.0, < 6.4.0.20","eol":null,"hubHref":"/vendor/ibm/security_directory_server"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.ibm.com/support/pages/node/1288660","label":"www.ibm.com/support/pages/node/1288660","hostname":"www.ibm.com","tags":["X Refsource CONFIRM","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/165953","label":"exchange.xforce.ibmcloud.com/vulnerabilities/165953","hostname":"exchange.xforce.ibmcloud.com","tags":["VDB Entry","X Refsource XF"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-02-04T16:45:36.361Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-16T23:46:52.622Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":21,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T16:40:39.175Z","stale":false,"partial":false}}