CVE-2026-21968
MediumSummary
A vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Affected versions are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. An easily exploitable vulnerability allows a low privileged attacker with network access via multiple protocols to compromise MySQL.
Risk Assessment
A low privileged attacker with network access could exploit the vulnerability to compromise the MySQL server, potentially leading to unauthorized access or data modification.
Recommendation
Update MySQL Server to a version containing the fix (outside the range 8.0.0-8.0.44, 8.4.0-8.4.7, 9.0.0-9.5.0).
Other vulnerabilities in MySQL Server
See all- CVE-2017-3309High
Vulnerability in the MySQL Server component of Oracle MySQL allows a low privileged attacker with network access to compromise the MySQL Server. Attacks may lead to hanging or frequently repeatable crashes of the server, resulting in a complete denial of service (DoS).
- CVE-2017-3308High
Vulnerability in the MySQL Server component of Oracle MySQL allows a low privileged attacker with network access to compromise MySQL Server. Attacks may lead to hangs or frequent crashes of the server, resulting in complete denial of service.
- CVE-2026-34303Medium
A vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Affected versions are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. An easily exploitable vulnerability allows a low privileged attacker with network access via multiple protocols to compromise MySQL.
- CVE-2026-61144Medium
Vulnerability in Oracle MySQL's MySQL Server and MySQL Cluster (component: Server: Optimizer). Affected versions are MySQL Server 9.7.0-9.7.1 and MySQL Cluster 9.7.0-9.7.1. Easily exploitable by a high-privileged attacker with network access via multiple protocols, potentially causing a hang or frequent crash (full DOS) of the server.
- CVE-2026-61128Medium
Vulnerability in MySQL Server and MySQL Cluster (component: Server: Optimizer) allows a high-privileged attacker to cause a hang or frequent crash (DOS) over the network. Network access and multiple protocols are required.
- CVE-2026-61108Medium
MySQL Server and MySQL Cluster versions 9.7.0-9.7.1 have a vulnerability in the GIS component allowing a low-privileged attacker to remotely cause a hang or frequent crash (full DoS).
- CVE-2026-61096Low
Vulnerability in MySQL Server and MySQL Cluster (component: Server: Pluggable Auth) in specified versions. Difficult to exploit, unauthenticated attacker with local logon can modify data.
- CVE-2026-61094High
Vulnerability in MySQL Server and MySQL Cluster (Oracle MySQL) allows a high-privileged attacker with network access via multiple protocols to take over the server. Affects MySQL Server 8.4.0-8.4.10, 9.7.0-9.7.1 and MySQL Cluster 8.0.0-8.0.47, 8.4.0-8.4.10, 9.7.0-9.7.1.
- CVE-2026-60315High
Vulnerability in MySQL Server and MySQL Cluster (component: Server: X Plugin) in multiple versions. It is easy to exploit, requires no authentication and network access. Successful attack can cause hang or frequent crashes (complete denial of service) and unauthorized read access to some data.
- CVE-2026-60191Medium
MySQL Server (versions 8.4.0-8.4.10, 9.7.0-9.7.1) and MySQL Cluster (versions 8.0.0-8.0.47, 8.4.0-8.4.10, 9.7.0-9.7.1) have a vulnerability in the Server: Replication component. A privileged attacker with local access can cause a hang or frequent crashes (complete DOS).
Original NVD description (English source)
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MyS
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

