Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Client programs). 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 unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
Published: 2026-10-20
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution / Server Takeover
Action: Immediate Patch
AI Analysis

Impact

The vulnerability resides in the client programs component of Oracle MySQL Server and MySQL Cluster. An unauthenticated attacker who can send traffic to the database through any of the supported network protocols can exploit a flaw that allows bypassing the intended access control, granting full control over the database instance. Successful exploitation would allow the attacker to execute arbitrary SQL commands, modify data, and ultimately take over the MySQL Server or Cluster, compromising confidentiality, integrity, and availability. The weakness corresponds to improper access control.

Affected Systems

Affected products are Oracle's MySQL Server and MySQL Cluster. The vulnerable ranges are MySQL Server 8.4.0‑8.4.12, 9.7.0‑9.7.3, and 26.7.0‑26.7.1, as well as 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. The issue is exploitable over the network via multiple protocols (e.g., TCP, UNIX socket, etc.) without requiring any preexisting authentication.

Risk and Exploitability

The CVSS base score is 8.1, reflecting high confidentiality, integrity, and availability impact, with a network attack vector and high attack complexity. EPSS score is < 1%, and the vulnerability is not yet listed in CISA’s KEV catalog. Even with a low exploitation probability, the combination of unauthenticated access and the ability to bypass access control makes this a high‑risk flaw that should be remediated promptly. The weakness is identified as CWE-284.

Generated by OpenCVE AI on October 23, 2026 at 02:53 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Oracle patch or upgrade MySQL Server and MySQL Cluster to the first non‑vulnerable version (e.g., 8.4.13, 9.7.4, 26.7.2 for Server; 8.0.50, 8.4.13, 9.7.4, 26.7.2 for Cluster).
  • Restrict network access to the MySQL ports (3306 and any cluster ports) by firewall rules, allowing traffic only from trusted hosts.
  • If immediate patching is not possible, deploy a security configuration that disables unneeded network protocols and requires strong authentication before any client connection can be processed.

Generated by OpenCVE AI on October 23, 2026 at 02:53 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

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

Type Values Removed Values Added
Title mysql: mysql: System takeover via client programs
Weaknesses CWE-20
References
Metrics threat_severity

None

 threat_severity

Important

Thu, 22 Oct 2026 18:15:00 +0000

Type Values Removed Values Added
Title MySQL Server and Cluster Remote Takeover via Client Program Vulnerability
Weaknesses CWE-287

Thu, 22 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Wed, 21 Oct 2026 04:00:00 +0000

Type Values Removed Values Added
Title MySQL Server and Cluster Remote Takeover via Client Program Vulnerability
Weaknesses CWE-287

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: Client programs). 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 unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Oracle Mysql Cluster Mysql Server
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-22T15:17:13.932Z

Reserved: 2026-09-28T15:40:09.505Z

Link: CVE-2026-101770

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:18:32.410

Modified: 2026-10-30T13:43:15.067

Link: CVE-2026-101770

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-20T21:22:49Z

Links: CVE-2026-101770 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T03:00:11Z

Weaknesses
  • CWE-20

    Improper Input Validation

  • CWE-284

    Improper Access Control