CVE-2026-101772

Analyzed Analyzed - Analysis Complete

Heap Buffer Overflow in MySQL Server

Publication date: 2026-10-20

Last updated on: 2026-10-29

Assigner: Oracle

Description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Client programs). 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. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-10-29

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-101772

EUVD

EUVD-2026-106173

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	mysql_cluster	From 26.7.0 (inc) to 26.7.1 (inc)
oracle	mysql_cluster	From 8.0.0 (inc) to 8.0.49 (inc)
oracle	mysql_cluster	From 8.4.0 (inc) to 8.4.12 (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 8.4.0 (inc) to 8.4.12 (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 MySQL Server and MySQL Cluster products. It allows an unauthenticated attacker with network access to potentially take over the affected systems. The vulnerability exists in the client programs component and affects multiple versions of MySQL Server and MySQL Cluster.

Detection Guidance

Detecting this vulnerability requires checking if your MySQL Server or MySQL Cluster version falls within the affected ranges (8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 for MySQL Server; 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 for MySQL Cluster). Use commands like 'mysql --version' or 'mysqld --version' to check installed versions.

Impact Analysis

If exploited, this vulnerability could allow an attacker to fully compromise the MySQL Server or MySQL Cluster, leading to unauthorized access, data theft, data manipulation, or system disruption. The high CVSS score indicates significant potential impact on confidentiality, integrity, and availability.

Compliance Impact

This vulnerability could lead to unauthorized access or exposure of sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations using affected MySQL versions should address this promptly to maintain compliance.

Mitigation Strategies

Immediately upgrade MySQL Server or MySQL Cluster to a patched version outside the affected ranges. Monitor Oracle's security advisories for updates and apply them promptly. Restrict network access to MySQL services if possible.

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EPSS Chart

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