UBUNTU-CVE-2026-101620: Medium severity ubuntu/mysql-5.5 vulnerability
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are MySQL Server: 9.7.0-9.7.3; MySQL Cluster: 9.7.0-9.7.3. Easily exploitable vulnerability allows low 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 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).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/mysql-9.7to a version that resolves this vulnerability.Fixed in 9.7.4-0ubuntu0.26.10.1
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
An attacker needs network access to the affected MySQL Server or MySQL Cluster instance and must have low-privileged credentials. No user interaction is required.
What is the expected impact of successful exploitation?
Successful exploitation can cause the database server or cluster to hang or repeatedly crash, resulting in a complete denial of service. The provided CVSS vector indicates no confidentiality or integrity impact.
Which upstream product versions are identified as affected?
The affected supported upstream versions are MySQL Server and MySQL Cluster 9.7.0 through 9.7.3.