Vulnerability in the Portable Clusterware component of Oracle Database Server.

Published 2 mo ago 2026-08-18 · modified 16 d ago 2026-10-22 · JSON

CVSS

9.6

v3.1 · CNA

CISA KEV

not known exploited

EPSS

0.4%

percentile 34%

Public exploits

none known

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).

CISA SSVC assessment

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 mo ago 2026-08-19

Exploit prediction (EPSS)

0.40% probability of exploitation in the next 30 days, higher than 34% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.1	9.6	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
CNA	3.1	9.6	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

Affected products

Oracle Corporation Oracle Database Server

Classification

Weakness

CWE-284 Improper Access Control

Technology feeds

Oracle Database (RSS, critical only)

References

oracle.com /security-alerts/cspuaug2026.html · vendor-advisory

Sources

CVE List: CVE-2026-71063
NVD: CVE-2026-71063

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary