{"id":"CVE-2020-2734","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-2734","generatedAt":"2026-10-28T05:27:00.138Z","title":"Vulnerability in the RDBMS/Optimizer component of Oracle Database Server.","description":"Vulnerability in the RDBMS/Optimizer component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows high privileged attacker having Execute on DBMS_SQLTUNE privilege with network access via Oracle Net to compromise RDBMS/Optimizer. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to a subset of RDBMS/Optimizer accessible data. CVSS 3.0 Base Score 2.4 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N).","published":"2020-04-15T14:15:23.000Z","lastModified":"2026-06-17T03:12:47.000Z","status":"Modified","sourceIdentifier":"secalert_us@oracle.com","cvss":{"version":"3.1","score":2.4,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N"},"cwe":[],"affected":["oracle/database server"],"epss":{"score":0.00892,"percentile":0.59239,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.89%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","tags":["Vendor Advisory"],"source":"secalert_us@oracle.com"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-2734","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."}