CVE-2026-101749

Analyzed Analyzed - Analysis Complete

Denial of Service in MySQL Server

Publication date: 2026-10-20

Last updated on: 2026-10-28

Assigner: Oracle

Description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are MySQL Server: 26.7.0-26.7.1; MySQL Cluster: 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).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-10-28

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-101749

EUVD

EUVD-2026-106150

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	mysql_cluster	From 26.7.0 (inc) to 26.7.1 (inc)
oracle	mysql_server	From 26.7.0 (inc) to 26.7.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle MySQL Server and MySQL Cluster versions 26.7.0 to 26.7.1. It affects the Server Security Encryption 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 26.7.0 to 26.7.1. Detection involves checking the installed version of MySQL Server or MySQL Cluster on your system. Use commands like 'mysql --version' or 'mysqld --version' to verify the version. If the version falls within the affected range, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability can disrupt database operations by causing frequent crashes or hangs, leading to downtime and loss of availability for services relying on MySQL Server or MySQL Cluster.

Compliance Impact

This vulnerability primarily impacts availability by causing denial-of-service conditions in MySQL Server and Cluster. It does not directly affect data confidentiality or integrity, which are key focus areas for GDPR and HIPAA compliance. However, prolonged downtime could disrupt access to personal or health data, potentially violating availability requirements under these regulations.

Mitigation Strategies

Upgrade MySQL Server and MySQL Cluster to versions beyond 26.7.1 to address the vulnerability. Apply the latest security patches from Oracle as soon as they are available.

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