CVE-2018-3247: Medium severity Oracle MySQL vulnerability
Last updated 18 August 2025
Other sources
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Merge). Supported versions that are affected are 5.6.41 and prior, 5.7.23 and prior and 8.0.12 and prior. Easily exploitable vulnerability allows high 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data.
External References:
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
— Red Hat
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Merge). Supported versions that are affected are 5.6.41 and prior, 5.7.23 and prior and 8.0.12 and prior. Easily exploitable vulnerability allows high 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.0 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).
— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2018-3247?
CVE-2018-3247 is a vulnerability in the MySQL Server component of Oracle MySQL that allows a high privileged attacker with network access to exploit the server via multiple protocols.
Which versions of MySQL are affected by CVE-2018-3247?
CVE-2018-3247 affects the following versions of MySQL: 5.6.41 and prior, 5.7.23 and prior, and 8.0.12 and prior.
How severe is CVE-2018-3247?
CVE-2018-3247 has a severity score of 5.5, which is considered medium.
How can I fix CVE-2018-3247?
To fix CVE-2018-3247, update your MySQL server to version 5.6.42, 5.7.24, or 8.0.13, depending on the affected version.
Where can I find more information about CVE-2018-3247?
You can find more information about CVE-2018-3247 on the Oracle website at http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html.