Vulnerability in the Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 11.2.0.4, 12.1.0.2, 12.2.0.1 and 18c. Easily exploitable vulnerability allows high privileged attacker having Grid Infrastructure User privilege with logon to the infrastructure where Portable Clusterware executes to compromise Portable Clusterware. While the vulnerability is in Portable Clusterware, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Portable Clusterware. CVSS 3.0 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).