Oracle DB PortableClusterware 19.3-23.26 Exploit AV:A, 9.6 CVSS
CVE-2026-71063 Published on August 18, 2026
Vulnerability in the Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Portable Clusterware executes to compromise Portable Clusterware. While the vulnerability is in Portable Clusterware, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Portable Clusterware. CVSS 3.1 Base Score 9.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
Vulnerability Analysis
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2026-71063 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2026-71063
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Affected Versions
Oracle Corporation Oracle Database Server:- Version 19.3, <= 19.32 is affected.
- Version 21.3, <= 21.23 is affected.
- Version 23.4.0, <= 23.26.3 is affected.