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. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-10-20
Score: 4.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Patch Immediately
AI Analysis

Impact

This vulnerability is located in the InnoDB component of Oracle MySQL Server and MySQL Cluster. An attacker who possesses high privileges and network access can trigger a hang or a complete crash of the database service, causing a denial of service. The fault does not affect confidentiality or integrity, but it does compromise the availability of the database.

Affected Systems

Oracle MySQL Server versions 8.4.0‑8.4.12, 9.7.0‑9.7.3, and 26.7.0‑26.7.1; Oracle MySQL Cluster versions 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 are impacted.

Risk and Exploitability

The CVSS v3.1 score is 4.4, indicating a moderate severity focused on availability. EPSS data is unavailable, and the vulnerability is not included in CISA’s KEV catalog, so publicly known exploitation is unlikely but not excluded. The attack requires network connectivity to the MySQL services and elevated privileges; it is considered complex due to the high access and privilege requirements, but once the conditions are met a successful exploit can reliably force the database to crash or hang.

Generated by OpenCVE AI on October 21, 2026 at 00:42 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Oracle MySQL security patch or upgrade to a non‑affected version such as MySQL Server 8.4.13 or later, MySQL Cluster 8.0.50 or later.
  • Restrict inbound network traffic to the MySQL ports (3306 and related) to trusted hosts only, blocking or filtering all other external connections.
  • Monitor MySQL logs and system metrics for repeated hangs or crashes, and consider limiting connection rates or applying temporary fail‑over measures to mitigate impact while a patch is deployed.

Generated by OpenCVE AI on October 21, 2026 at 00:42 UTC.

Tracking

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Advisories

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History

Thu, 05 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

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

Type Values Removed Values Added
Title Denial of Service via Network Access in MySQL InnoDB Component mysql: mysql: Denial of service in InnoDB
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 21 Oct 2026 01:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via Network Access in MySQL InnoDB Component
Weaknesses CWE-400

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. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/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: 2026-11-05T16:07:15.066Z

Reserved: 2026-09-28T15:40:09.495Z

Link: CVE-2026-101609

cve-icon Vulnrichment

Updated: 2026-11-05T15:57:39.559Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:14.657

Modified: 2026-11-05T17:17:30.900

Link: CVE-2026-101609

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:51Z

Links: CVE-2026-101609 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T01:00:17Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption