CVE-2026-71063

State: Published
Severity: 9.6 Critical
Published: Aug 18, 2026
Updated: Sep 17, 2026
Reserved: Aug 4, 2026

Description

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).

Scores

CVSS	Score	Vector	Source
3.1	9.6 Critical	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	oracle

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
Oracle Database ServerOracle Corporation	19.3 through 19.32Affected 21.3 through 21.23Affected 23.4.0 through 23.26.3Affected

References

Oracle Advisoryvendor-advisory

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