CVE-2019-2991: Medium severity Oracle MySQL vulnerability
Last updated 25 August 2025
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.017 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/cpuoct2019-5072832.html
— Red Hat
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.017 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 the severity of CVE-2019-2991?
CVE-2019-2991 is considered an easily exploitable vulnerability that affects the MySQL Server product of Oracle MySQL.
How do I fix CVE-2019-2991?
To fix CVE-2019-2991, upgrade to MySQL version 8.0.18 or later.
Which versions are affected by CVE-2019-2991?
CVE-2019-2991 affects MySQL Server versions 8.0.17 and earlier.
Who can exploit CVE-2019-2991?
CVE-2019-2991 can be exploited by high privileged attackers with network access via multiple protocols.
What components of MySQL does CVE-2019-2991 impact?
CVE-2019-2991 impacts the Optimizer component of the MySQL Server product.