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).
Published: 2026-10-20
Score: 4.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Apply Patch
AI Analysis

Impact

A flaw in the InnoDB storage engine of Oracle MySQL Server and MySQL Cluster allows a high-privileged attacker with network access to force the database to hang or repeatedly crash. This results in a denial of service that affects only availability, with no impact on data confidentiality or integrity.

Affected Systems

Affected are Oracle MySQL Server and MySQL Cluster. The vulnerable releases are MySQL Server 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1; and MySQL Cluster 8.0.0 through 8.0.49, 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1. Any deployment matching those ranges is at risk and should be identified for remediation.

Risk and Exploitability

The CVSS 3.1 base score of 4.9 quantifies a low availability risk. The EPSS score is less than 1 %, indicating a low likelihood of exploitation at this time, and the vulnerability is not listed in the CISA KEV catalog. The attack requires a high-privileged attacker who already has network connectivity to the MySQL instance via one of its supported protocols. Because a single successful exploit can bring the database service down, the threat is significant for environments where high availability is critical.

Generated by OpenCVE AI on October 23, 2026 at 03:01 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Oracle MySQL update released for the affected releases (CPU October 2026) which patches the InnoDB crash vulnerability.
  • As an interim measure, restrict or block external access to the MySQL port from untrusted networks until the patch is applied.
  • Restart the MySQL service to recover from any crash or hang that may have occurred as a result of the vulnerability.

Generated by OpenCVE AI on October 23, 2026 at 03:01 UTC.

Tracking

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Advisories

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History

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Title InnoDB Storage Engine Crash Vulnerability in Oracle MySQL Server and Cluster mysql: mysql: Denial of service via InnoDB storage engine
Weaknesses CWE-400
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 13:15:00 +0000

Type Values Removed Values Added
Title InnoDB Storage Engine Crash Vulnerability in Oracle MySQL Server and Cluster

Thu, 22 Oct 2026 11:15:00 +0000

Type Values Removed Values Added
Title Denial of Service via InnoDB Vulnerability in MySQL Server and Cluster
Weaknesses CWE-399

Wed, 21 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 21 Oct 2026 05:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via InnoDB Vulnerability in MySQL Server and Cluster
Weaknesses CWE-399

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
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).
First Time appeared Oracle
Oracle mysql Cluster
Oracle mysql Server
CPEs cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle mysql Cluster
Oracle mysql Server
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

Oracle Mysql Cluster Mysql Server
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-21T18:37:03.333Z

Reserved: 2026-09-28T15:40:09.496Z

Link: CVE-2026-101624

cve-icon Vulnrichment

Updated: 2026-10-21T18:19:29.897Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:16.383

Modified: 2026-10-21T19:16:50.923

Link: CVE-2026-101624

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:57Z

Links: CVE-2026-101624 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T03:15:16Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-400

    Uncontrolled Resource Consumption