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

The vulnerability exists in the InnoDB component of Oracle MySQL Server and Oracle MySQL Cluster. A high‑privileged attacker with network access can execute operations that cause the database server to hang or crash, leading to a denial of service. The loss of availability impacts any applications relying on the database; confidentiality and integrity are not compromised.

Affected Systems

Oracle MySQL Server versions 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1 are affected. Oracle MySQL Cluster versions 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 are vulnerable.

Risk and Exploitability

The CVSS 3.1 base score is 4.9, reflecting an availability impact for attacks that originate over the network and require high privileges. The EPSS score of < 1% indicates a very low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. The attack vector is network‑based, targeting one of the supported protocols; successful exploitation results in the MySQL service becoming unresponsive or crashing.

Generated by OpenCVE AI on October 23, 2026 at 02:35 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the vendor‑provided patch or upgrade to a version newer than the affected ranges.
  • If an immediate upgrade is not possible, restrict network access to the database by permitting only trusted hosts or by using a firewall to block untrusted inbound traffic.
  • Monitor the MySQL service for repeated hangs or crashes, verify that incidents are logged, and consider adjusting configuration or workload parameters to mitigate resource exhaustion.

Generated by OpenCVE AI on October 23, 2026 at 02:35 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 Crash Leading to Denial of Service in Oracle MySQL Server and Cluster mysql: mysql: Denial of Service in InnoDB
Weaknesses CWE-617
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Title InnoDB Crash Leading to Denial of Service in Oracle MySQL Server and Cluster

Thu, 22 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Title InnoDB-Induced Hang or Crash in Oracle MySQL Causing Denial of Service
Weaknesses CWE-770

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 05:15:00 +0000

Type Values Removed Values Added
Title InnoDB-Induced Hang or Crash in Oracle MySQL Causing Denial of Service
Weaknesses CWE-770

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: 2026-10-21T18:37:49.152Z

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

Link: CVE-2026-101618

cve-icon Vulnrichment

Updated: 2026-10-21T18:19:20.332Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:15.690

Modified: 2026-10-21T19:16:50.183

Link: CVE-2026-101618

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:55Z

Links: CVE-2026-101618 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T02:45:03Z

Weaknesses