# CVE-2026-71063: Vulnerability in the Portable Clusterware component of Oracle Database Server. Supported versions that are affected…

Source: https://junglewise.ai/threats/cve-2026-71063-vulnerability-in-the-portable-clusterware-component-of-oracle  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-18  
License: CC BY 4.0 with a link back

CVE-2026-71063 · Severity: critical · CVSS 9.6 · Published 2026-08-18

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).

Technologies: [Oracle Database Server](https://junglewise.ai/threats/technologies/oracle-database-server). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-71063 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-71063 being exploited in the wild.

**How severe is CVE-2026-71063?** Critical severity, with a CVSS score of 9.6, published 18 August 2026.

**Which products and versions are affected?** Oracle Database Server. The advisory does not name versions.

**Is there a fix for CVE-2026-71063?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-71063?** Check whether you run Oracle Database Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Oracle Database Server

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