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 Deployment
AI Analysis

Impact

A flaw in the InnoDB engine of Oracle MySQL Server and Cluster allows a high‑privileged attacker with network access to trigger repeated crashes or hangs, resulting in a denial of service to all database users. The vulnerability does not affect confidentiality or integrity; its CVSS vector indicates only an availability impact.

Affected Systems

Affected versions are Oracle MySQL Server 8.4.0‑8.4.12, 9.7.0‑9.7.3, and 26.7.0‑26.7.1, and Oracle 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.

Risk and Exploitability

The CVSS score of 4.4 reflects moderate severity, and the EPSS score of less than 1 % indicates a very low but non‑zero likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog, and no publicly disclosed exploit has been reported. Attackers must have high privileges and network access through supported protocols; the vector suggests remote access over the network. The likely attack vector is remote network access over the supported protocols. Given the current evidence, the risk is moderate but requires monitoring for repeated service crashes.

Generated by OpenCVE AI on October 23, 2026 at 05:47 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Oracle patch or upgrade MySQL Server to a release later than 8.4.12, 9.7.3, or 26.7.1, and upgrade MySQL Cluster to a release later than 8.0.49, 8.4.12, 9.7.3, or 26.7.1.
  • Restrict network access to MySQL ports to trusted administrative hosts using firewall rules or secure network segmentation.
  • Monitor MySQL logs and performance metrics for repeated hangs or crashes and configure alerts when thresholds are exceeded.

Generated by OpenCVE AI on October 23, 2026 at 05:47 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 MySQL InnoDB Denial of Service Vulnerability mysql: mysql: Denial of Service in InnoDB component
Weaknesses CWE-400
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Title MySQL InnoDB Denial of Service Vulnerability

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

Type Values Removed Values Added
Title InnoDB Component Vulnerability Allowing Denial of Service in MySQL Server and Cluster
Weaknesses CWE-119
CWE-400

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 00:45:00 +0000

Type Values Removed Values Added
Title InnoDB Component Vulnerability Allowing Denial of Service in MySQL Server and Cluster
Weaknesses CWE-119
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: 2026-10-21T18:36:37.529Z

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

Link: CVE-2026-101627

cve-icon Vulnrichment

Updated: 2026-10-21T18:19:34.611Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:16.723

Modified: 2026-10-21T19:16:51.283

Link: CVE-2026-101627

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:58Z

Links: CVE-2026-101627 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T06:00:13Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-400

    Uncontrolled Resource Consumption