CVE-2026-101749: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are MySQL Server: 26.7.0-26.7.1; MySQL Cluster: 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).
Affected Software
Event History
Frequently Asked Questions
Who is able to exploit this issue?
An attacker needs high privileges and network access to the affected MySQL Server or MySQL Cluster instance. No user interaction is required.
What is the likely impact of successful exploitation?
Successful exploitation can cause the server or cluster to hang or crash repeatedly, resulting in a complete denial of service. The provided CVSS information indicates no confidentiality or integrity impact.
Which deployments should be checked?
Check Oracle MySQL Server and Oracle MySQL Cluster deployments running versions 26.7.0 through 26.7.1. The affected component is Server: Security: Encryption.
Is exploitation dependent on a particular network protocol?
The vulnerability is reachable over multiple protocols, according to the provided description. Network exposure alone is not sufficient; the attacker must also have high privileges.