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NVD CRITICAL: CVE-2026-47040 — Vulnerability in the Oracle Net Services component of Oracle Database Server. S...

·Source: NIST NVD

Updated:

Executive Summary

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. 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 access to critical data or comp

Analysis

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. 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 access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H). CVSS Score: 9.1. Published: 2026-07-21T22:17:09.667.

Indicators of Compromise (1)

CVE (1)
CVE-2026-47040
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jul 21, 2026. Verified by: NIST.

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