CVE-2026-47012

Analyzed Analyzed - Analysis Complete

Denial of Service in Oracle MySQL Server

Publication date: 2026-07-21

Last updated on: 2026-07-27

Assigner: Oracle

Description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are MySQL Server: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7.0-9.7.1. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-27

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-47012

EUVD

EUVD-2026-46501

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	mysql_server	From 8.4.0 (inc) to 8.4.10 (inc)
oracle	mysql_server	9.7.0
oracle	mysql_server	9.7.1
oracle	mysql_cluster	From 8.0.0 (inc) to 8.0.47 (inc)
oracle	mysql_cluster	From 8.4.0 (inc) to 8.4.10 (inc)
oracle	mysql_cluster	9.7.0
oracle	mysql_cluster	9.7.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is a vulnerability in the MySQL Server and MySQL Cluster products affecting specific versions. It exists in the Server: Optimizer component and allows a high-privileged attacker with network access to cause a denial of service (DOS) by crashing or hanging the server repeatedly.

Detection Guidance

This vulnerability affects MySQL Server and MySQL Cluster versions listed. Detection requires checking installed versions against the affected ranges. Use commands like 'mysql --version' or 'mysqld --version' to check server version. For MySQL Cluster, check 'ndb_mgmd --version' or 'ndbd --version'. If versions fall within 8.4.0-8.4.10, 9.7.0-9.7.1 (Server) or 8.0.0-8.0.47, 8.4.0-8.4.10, 9.7.0-9.7.1 (Cluster), the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could lead to frequent crashes or hangs of your MySQL Server or MySQL Cluster, disrupting database operations and causing downtime. This impacts availability of the database services.

Compliance Impact

This vulnerability primarily causes denial-of-service (DoS) conditions in MySQL Server and Cluster, leading to system unavailability. While it does not directly expose data, prolonged downtime could impact systems handling regulated data, potentially violating availability requirements in GDPR, HIPAA, and other standards that mandate timely access to personal or health information.

Mitigation Strategies

Upgrade MySQL Server and MySQL Cluster to versions 8.4.11 or later, or 9.7.2 or later, as these versions address the vulnerability. Apply the latest patches from Oracle to prevent potential denial-of-service attacks.

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