Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Security: Audit). 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 low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-10-20
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Apply Patch
AI Analysis

Impact

The vulnerability arises from an error in the Security Audit component of Oracle MySQL Server and MySQL Cluster. It is classified as CWE-284, CWE-400, indicating unauthorized configuration changes and uncontrolled resource consumption. When triggered, the flaw causes the database engine to hang or crash repeatedly, resulting in a complete denial of service that leaves the service unavailable until it can be restarted manually.

Affected Systems

Affected products are Oracle MySQL Server and Oracle MySQL Cluster. 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 impacted. 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 also suffer from the same issue.

Risk and Exploitability

The CVSS base score of 6.5 signals a moderate level of risk. The exploit requires only network connectivity to one of the MySQL protocols and a low‑privileged account, with no user interaction needed. Because the flaw can be triggered via standard audit traffic, attackers can achieve a denial of service with minimal effort. The EPSS score of <1% indicates a very low probability of exploitation, and the vulnerability is not listed in CISA’s KEV catalog, but the attack vector and low effort make it a notable concern for any exposed MySQL instance.

Generated by OpenCVE AI on October 23, 2026 at 05:31 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply Oracle’s official patch for MySQL Server or MySQL Cluster, or upgrade to a version newer than the affected ranges.
  • If the audit feature is not essential, disable it until the patch or an upgrade is applied, preventing the flaw from being exploitable.
  • Restrict inbound MySQL traffic to trusted hosts or VPN endpoints using firewall or network segmentation to reduce exposure to potential attackers.

Generated by OpenCVE AI on October 23, 2026 at 05:31 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 23 Oct 2026 03:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770

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

Type Values Removed Values Added
Title mysql: mysql: Denial of Service via the audit component
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 18:30:00 +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
Weaknesses CWE-400
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: Server: Security: Audit). 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 low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/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: 2026-10-22T17:32:47.633Z

Reserved: 2026-09-28T15:40:09.504Z

Link: CVE-2026-101748

cve-icon Vulnrichment

Updated: 2026-10-22T17:26:07.847Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:18:29.860

Modified: 2026-10-28T18:52:27.097

Link: CVE-2026-101748

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:40Z

Links: CVE-2026-101748 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T05:45:12Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-400

    Uncontrolled Resource Consumption