Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are MySQL Server: 9.7.0-9.7.1; MySQL Cluster: 9.7.0-9.7.1. 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: 2026-07-21
Score: 4.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A defect in the Optimizer component of Oracle MySQL Server and MySQL Cluster enables a high privileged attacker who can communicate over the network through any of the supported protocols to cause the database services to hang or crash repeatedly. The result is a complete loss of availability, with no disclosed impact to confidentiality or integrity.

Affected Systems

Affected are Oracle MySQL Server and MySQL Cluster versions 9.7.0 through 9.7.1. These releases are vulnerable to the described optimizer flaw.

Risk and Exploitability

The CVSS v3.1 Base Score of 4.9 highlights a moderate availability impact. The EPSS score of less than 1% indicates a very low likelihood of exploitation in the wild, and the vulnerability is not listed in the CISA KEV catalog. The likely attack path requires the attacker to have high privilege credentials on the host, access to the network interfaces exposing MySQL, and to submit a query that triggers the optimizer bug. Successful exploitation results in a service crash that is repeatable until the system is restarted or patched.

Generated by OpenCVE AI on August 2, 2026 at 19:43 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Oracle MySQL Server and MySQL Cluster to a version newer than 9.7.1, at least to 9.7.2 or later, to remove the optimizer bug.
  • If an immediate upgrade is not possible, restrict external network access to the MySQL ports (commonly 3306) by using firewall rules or network segmentation to limit the number of attackers who can reach the database services.
  • Apply any additional general database hardening measures such as enforcing least privilege for user accounts and disabling unused protocols, which may reduce attack surface while the patch is pending.

Generated by OpenCVE AI on August 2, 2026 at 19:43 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 28 Jul 2026 19:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-399

Tue, 28 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Title Optimizer‑Related Crash Causes Denial of Service in MySQL Server and Cluster mysql: Optimizer unspecified vulnerability (CPU Jul 2026)
Weaknesses CWE-770
References
Metrics threat_severity

None

 threat_severity

Moderate

Fri, 24 Jul 2026 18:45:00 +0000

Type Values Removed Values Added
Title Optimizer‑Related Crash Causes Denial of Service in MySQL Server and Cluster
Weaknesses CWE-399

Thu, 23 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

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

Tue, 21 Jul 2026 22:00:00 +0000

Type Values Removed Values Added
Description Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are MySQL Server: 9.7.0-9.7.1; MySQL Cluster: 9.7.0-9.7.1. 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: 2026-07-23T18:41:42.788Z

Reserved: 2026-07-08T15:52:20.737Z

Link: CVE-2026-61144

cve-icon Vulnrichment

Updated: 2026-07-23T18:41:39.435Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-21T00:00:00Z

Links: CVE-2026-61144 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-02T19:45:06Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption

  • CWE-770

    Allocation of Resources Without Limits or Throttling