CVE-2026-22009
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
A vulnerability in Oracle MySQL Server (component: Server: Optimizer) affects versions 8.0.0-8.0.45, 8.4.0-8.4.8, and 9.0.0-9.6.0. A low-privileged attacker with network access can cause a hang or frequently repeatable crash, resulting in a complete denial of service (DoS) of MySQL Server.
Risk Assessment
An attacker with basic privileges can remotely cause database unavailability, potentially disrupting applications that depend on MySQL.
Recommendation
Update MySQL Server to a version containing the fix (outside the listed affected versions) and restrict network access to the database server.
Other vulnerabilities in MySQL Server
See all- CVE-2026-101637Medium
Vulnerability in MySQL Server and MySQL Cluster (component InnoDB) versions 9.7.0-9.7.3 and 26.7.0-26.7.1. It allows a high-privileged attacker with network access via multiple protocols to cause a hang or frequently repeatable crash (complete DoS) and unauthorized modification of some data.
- CVE-2026-101629Medium
A vulnerability in Oracle MySQL (InnoDB component) affects MySQL Server 9.7.0-9.7.3 and 26.7.0-26.7.1, and MySQL Cluster in the same versions. A high-privileged attacker with network access can cause a hang or frequently repeatable crash (complete DoS) of the server or cluster.
- CVE-2026-101627Medium
A vulnerability in Oracle MySQL (InnoDB component) affects MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1, and 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. A high-privileged attacker with network access can cause a hang or frequently repeatable crash (complete DoS), although exploitation is difficult.
- CVE-2026-101624Medium
A vulnerability in Oracle MySQL (InnoDB component) affects MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1, and 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. A high-privileged attacker with network access can cause a hang or frequently repeatable crash (complete DoS).
- CVE-2026-101623Medium
A vulnerability in Oracle MySQL (Server: Optimizer component) affects MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1, and 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. A high-privileged attacker with network access can cause a hang or frequently repeatable crash (complete DoS).
- CVE-2026-101622Medium
A vulnerability in Oracle MySQL (InnoDB component) affects MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1, and 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. A high-privileged attacker with network access can cause a hang or frequently repeatable crash (complete DoS).
- CVE-2026-101621Medium
A vulnerability in Oracle MySQL (InnoDB component) affects MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1, and 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. A high-privileged attacker with network access can cause a hang or frequently repeatable crash (complete DoS).
- CVE-2026-101620Medium
A vulnerability in Oracle MySQL (Server: Optimizer component) affects MySQL Server 9.7.0-9.7.3 and MySQL Cluster 9.7.0-9.7.3. A low-privileged attacker with network access can cause a hang or frequently repeatable crash (complete DoS).
- CVE-2026-101619Medium
Vulnerability in MySQL Server and MySQL Cluster (InnoDB component) allows a high-privileged attacker with network access to cause a hang or frequently repeatable crash (complete DoS) of the server. Affects MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 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.
- CVE-2026-101618Medium
Vulnerability in MySQL Server and MySQL Cluster (InnoDB component) allows a high-privileged attacker with network access to cause a hang or frequently repeatable crash (complete DoS) of the server. Affects MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 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.
Original NVD description (English source)
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. 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).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS