CVE-2026-101617

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Denial of Service in Oracle MySQL Server

Publication date: 2026-10-20

Last updated on: 2026-11-05

Assigner: Oracle

Description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

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Meta Information

Published

2026-10-20

Last Modified

2026-11-05

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-101617

EUVD

EUVD-2026-106025

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	MySQL Server	8.4.0-8.4.12
Oracle Corporation	MySQL Server	9.7.0-9.7.3
Oracle Corporation	MySQL Server	26.7.0-26.7.1
Oracle Corporation	MySQL Cluster	8.0.0-8.0.49
Oracle Corporation	MySQL Cluster	8.4.0-8.4.12
Oracle Corporation	MySQL Cluster	9.7.0-9.7.3
Oracle Corporation	MySQL Cluster	26.7.0-26.7.1

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 denial-of-service (DoS) vulnerability in Oracle MySQL Server and MySQL Cluster. It allows a high-privileged attacker with network access to crash the database or cause repeated crashes, disrupting service availability.

Detection Guidance

This vulnerability affects specific versions of MySQL Server and MySQL Cluster. To detect it, check the installed version of MySQL Server or MySQL Cluster on your system. If the version falls within the affected ranges (e.g., 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 for MySQL Server), the system is vulnerable.

Impact Analysis

If exploited, this vulnerability can cause your MySQL Server or MySQL Cluster to become unavailable, leading to downtime for applications relying on the database. This disrupts normal operations and may result in data access issues.

Compliance Impact

This vulnerability causes denial-of-service (DoS) conditions in MySQL Server and MySQL Cluster, leading to system unavailability. For GDPR, this could impact data processing operations requiring continuous availability. For HIPAA, it may disrupt access to protected health information systems. Compliance may be affected if systems fail to maintain required uptime or data accessibility.

Mitigation Strategies

Upgrade MySQL Server and MySQL Cluster to versions beyond the affected range (8.4.12, 9.7.3, 26.7.1, 8.0.49) as specified in the CVE description.

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