{"id":"CVE-2019-4520","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-4520","generatedAt":"2026-10-27T20:19:48.478Z","title":"IBM Security Directory Server 6.4.0 uses an inadequate account lockout setting that could allow a remote attacker to brute force account credentials.","description":"IBM Security Directory Server 6.4.0 uses an inadequate account lockout setting that could allow a remote attacker to brute force account credentials. IBM X-Force ID: 165178.","published":"2019-10-02T15:15:10.000Z","lastModified":"2026-06-17T02:36:36.000Z","status":"Modified","sourceIdentifier":"psirt@us.ibm.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-307"],"affected":["ibm/security directory server"],"epss":{"score":0.02224,"percentile":0.82583,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/165178","tags":["VDB Entry","Vendor Advisory"],"source":"psirt@us.ibm.com"},{"url":"https://www.ibm.com/support/pages/node/1077045","tags":["Patch","Vendor Advisory"],"source":"psirt@us.ibm.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/165178","tags":["VDB Entry","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.ibm.com/support/pages/node/1077045","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-4520","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}