Vulnerability in the Oracle Net Services 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 network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Sun, 27 Sep 2026 03:00:00 +0000

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

Fri, 18 Sep 2026 15:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated Oracle Net Services Denial of Service via Resource Exhaustion

Wed, 16 Sep 2026 18:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated Oracle Net Services Denial of Service via Resource Exhaustion

Wed, 16 Sep 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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

Type Values Removed Values Added
Description Vulnerability in the Oracle Net Services 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 network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
First Time appeared Oracle
Oracle database - E Net Services
CPEs cpe:2.3:a:oracle:database_-_e_net_services:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle database - E Net Services
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-09-15T23:14:52.978Z

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

Link: CVE-2026-83349

cve-icon Vulnrichment

Updated: 2026-09-15T23:12:51.098Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-15T20:18:48.360

Modified: 2026-09-16T19:42:12.090

Link: CVE-2026-83349

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-27T02:45:11Z

Weaknesses