CVE-2026-71064

CRITICAL
INFO Priority: 0.04 BB Relevance: 64/100
Published: 2026-08-18 Modified: 2026-10-22 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: Changed
C: High
I: High
A: High

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).

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
oracle database_server 19.3 – 19.32

References & Advisories (1)

Bug Bounty Relevance

64 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.6 / 10.0 v3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploitation Probability

0.40%
Raw Score 0.003950
Percentile 33.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00395
2026-10-28
0.00395

Intelligence Sources

nvd ref →