CVE-2026-22017: Medium severity Oracle MySQL Server vulnerability
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).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Remove
Remove
MySQL Serverfrom your environment.If MySQL Server is not required in the environment, uninstall or otherwise remove the MySQL Server installation to eliminate exposure.
- Compensating control
Restrict network access to MySQL Server to only trusted hosts and networks using firewall rules, network ACLs, or a WAF. Isolate the server from untrusted networks and management interfaces until a vendor fix is available.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-22017?
CVE-2026-22017 is categorized as an easily exploitable vulnerability that affects low privileged users.
What versions of MySQL Server are affected by CVE-2026-22017?
CVE-2026-22017 affects Oracle MySQL Server versions 8.0.0 to 8.0.45, 8.4.0 to 8.4.8, and 9.0.0 to 9.6.0.
How can I fix CVE-2026-22017?
To mitigate CVE-2026-22017, upgrade your MySQL Server to a version that is not affected by this vulnerability.
What are the potential impacts of CVE-2026-22017?
CVE-2026-22017 may allow a low privileged attacker to compromise MySQL Server with network access.
Is there any workaround for CVE-2026-22017?
Currently, the recommended approach for CVE-2026-22017 is to apply the appropriate updates as no specific workarounds have been provided.