CVE-2018-2781: Medium severity Debian Debian Linux vulnerability
Last updated 18 August 2025
Other sources
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.5.59 and prior, 5.6.39 and prior and 5.7.21 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.
External References:
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
— Red Hat
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.5.59 and prior, 5.6.39 and prior and 5.7.21 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. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2018-2781?
CVE-2018-2781 is considered an easily exploitable vulnerability that allows high privileged attackers with network access to gain unauthorized access.
How do I fix CVE-2018-2781?
To fix CVE-2018-2781, upgrade MySQL Server to version 5.5.60, 5.6.40, or 5.7.22 or later.
What versions of MySQL are affected by CVE-2018-2781?
Versions affected by CVE-2018-2781 include MySQL 5.5.59 and prior, 5.6.39 and prior, and 5.7.21 and prior.
Are MariaDB versions affected by CVE-2018-2781?
Yes, certain versions of MariaDB, particularly those that align with the affected MySQL versions, are also vulnerable.
Where can I find more information about CVE-2018-2781?
More information about CVE-2018-2781 can usually be found in security advisories and vulnerability databases.