Description
Vulnerability in the RDBMS 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 low privileged attacker having Create DB Link privilege 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 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Published: 2026-09-15
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Privilege escalation leading to database server takeover
Action: Immediate Patch
AI Analysis

Impact

This vulnerability is a privilege‑assignment flaw (CWE-269) that resides in the RDBMS component of Oracle Database Server. An attacker with low privileges who holds the Create DB Link privilege and can reach the database over Oracle Net can exploit the flaw. Successful exploitation allows the attacker to gain full control of the database server, compromising confidentiality, integrity, and availability of all data stored therein.

Affected Systems

Oracle Corporation’s Oracle Database Server is affected, with supported versions 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3.

Risk and Exploitability

The CVSS base score is 8.8, indicating high severity. The EPSS score is less than 1%, suggesting a low current exploitation probability. The vulnerability is not listed in CISA’s KEV catalog. The likely attack vector is a network‑based attack through Oracle Net, requiring the Create DB Link privilege on the target system.

Generated by OpenCVE AI on September 20, 2026 at 07:56 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest vendor patch for the affected Oracle Database Server versions
  • Enforce the principle of least privilege by restricting the Create DB Link privilege to only trusted accounts or removing it when not needed
  • If a patch is not immediately available, temporarily block network access to the RDBMS from untrusted networks or isolate the database servers within a hardened subnet

Generated by OpenCVE AI on September 20, 2026 at 07:56 UTC.

Tracking

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Advisories

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History

Sun, 20 Sep 2026 08:15:00 +0000

Type Values Removed Values Added
Title Oracle Database Server RDBMS Privilege Escalation via Create DB Link

Fri, 18 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Title Privilege Escalation via Create DB Link in Oracle Database RDBMS
Weaknesses CWE-732

Thu, 17 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 17 Sep 2026 00:00:00 +0000

Type Values Removed Values Added
Title Privilege Escalation via Create DB Link in Oracle Database RDBMS
Weaknesses CWE-269
CWE-732

Wed, 16 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Oracle database Server
Vendors & Products Oracle database Server

Tue, 15 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
Description Vulnerability in the RDBMS 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 low privileged attacker having Create DB Link privilege 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 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
First Time appeared Oracle
Oracle database - Rdbms
CPEs cpe:2.3:a:oracle:database_-_rdbms:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle database - Rdbms
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Oracle Database - Rdbms Database Server
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-09-17T13:00:25.535Z

Reserved: 2026-08-31T15:40:57.354Z

Link: CVE-2026-83348

cve-icon Vulnrichment

Updated: 2026-09-17T12:59:18.356Z

cve-icon NVD

Status : Deferred

Published: 2026-09-15T20:18:48.247

Modified: 2026-09-17T14:17:42.737

Link: CVE-2026-83348

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-20T08:00:08Z

Weaknesses
  • CWE-269

    Improper Privilege Management