Oracle MySQL Server/MySQL Cluster Client programs privileges management

Summaryinfo

A vulnerability has been found in Oracle MySQL Server and MySQL Cluster 8.0.0-8.0.49/8.4.0-8.4.12/9.7.0-9.7.3/26.7.0-26.7.1 and classified as very critical. Affected by this vulnerability is an unknown functionality of the component Client programs. Performing a manipulation results in privileges management. This vulnerability is cataloged as CVE-2026-101771. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Oracle MySQL Server and MySQL Cluster 8.0.0-8.0.49/8.4.0-8.4.12/9.7.0-9.7.3/26.7.0-26.7.1. This affects an unknown part of the component Client programs. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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).

The advisory is shared at oracle.com. This vulnerability is uniquely identified as CVE-2026-101771 since 09/28/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/21/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Database Software

Vendor

• Oracle

Name

• MySQL Cluster
• MySQL Server

Version

• 8.0.0-8.0.49
• 8.4.0-8.4.12
• 9.7.0-9.7.3
• 26.7.0-26.7.1

License

• open-source

Website

• Vendor: https://www.oracle.com

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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