UBUNTU-CVE-2026-101637: Medium severity ubuntu/mysql-5.5 vulnerability
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB). Supported versions that are affected are MySQL Server: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 9.7.0-9.7.3 and 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 as well as unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/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?
The attacker must already have high privileges and network access to the affected MySQL Server or MySQL Cluster instance. No user interaction is required.
What could a successful attack do?
A successful attack can cause a server hang or repeatable crash resulting in denial of service. It can also allow unauthorized update, insert, or delete operations on some accessible data; confidentiality impact is listed as none.
Which upstream product versions are identified as affected?
Affected MySQL Server versions are 9.7.0 through 9.7.3 and 26.7.0 through 26.7.1. The same version ranges are identified for MySQL Cluster.