CVE-2026-101777

Analyzed Analyzed - Analysis Complete

Denial of Service in MySQL Server

Publication date: 2026-10-20

Last updated on: 2026-10-30

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: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 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 and unauthorized read access to a subset of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 5.5 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H).

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Meta Information

Published

2026-10-20

Last Modified

2026-10-30

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-101777

EUVD

EUVD-2026-106178

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	mysql_cluster	From 26.7.0 (inc) to 26.7.1 (inc)
oracle	mysql_cluster	From 9.7.0 (inc) to 9.7.3 (inc)
oracle	mysql_server	From 26.7.0 (inc) to 26.7.1 (inc)
oracle	mysql_server	From 9.7.0 (inc) to 9.7.3 (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 9.7.0-9.7.3 and 26.7.0-26.7.1. It allows a high-privileged attacker with network access to cause a denial of service (DoS) or crash the server repeatedly. It may also allow unauthorized read access to some data.

Impact Analysis

If exploited, this vulnerability could disrupt database operations by causing crashes or hangs, leading to downtime. It may also expose sensitive data if an attacker gains read access to a subset of the database.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR and HIPAA requirements for data confidentiality and integrity. Organizations using affected MySQL versions may face compliance violations and potential penalties.

Mitigation Strategies

Upgrade MySQL Server and MySQL Cluster to versions beyond 9.7.3 and 26.7.1 respectively to address the vulnerability.

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