CVE-2026-83351

Received Received - Intake

RDBMS Component Takeover in Oracle Database Server

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Oracle

Description

Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in takeover of RDBMS. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

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Meta Information

Published

2026-09-15

Last Modified

2026-09-15

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83351

EUVD

EUVD-2026-79704

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	database_server	From 23.4.0 (inc) to 23.26.3 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in the RDBMS component of Oracle Database Server affecting versions 23.4.0 to 23.26.3. It allows an unauthenticated attacker with network access via Oracle Net to compromise the RDBMS. Successful exploitation could lead to a complete takeover of the RDBMS.

Detection Guidance

This vulnerability is specific to Oracle Database Server versions 23.4.0-23.26.3 and requires network access via Oracle Net. Detection involves checking the Oracle Database Server version and ensuring the latest patches are applied. No specific commands are provided in the context to detect this vulnerability directly.

Impact Analysis

An attacker could gain full control over your Oracle Database Server, leading to unauthorized access, data theft, data manipulation, or service disruption. This could result in significant data breaches or system outages.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, and other regulations due to unauthorized data access or breaches. Organizations may face legal penalties, fines, or reputational damage if exploited.

Mitigation Strategies

Apply the latest Oracle Database Server patches immediately as they address this vulnerability. Ensure network access controls restrict Oracle Net connections to trusted sources only. Monitor Oracle security advisories for updates and follow Oracle's recommended hardening guidelines for the RDBMS component.

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