CVE-2019-2503: Medium severity Oracle MySQL vulnerability
Last updated 18 August 2025
Other sources
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Connection Handling). Supported versions that are affected are 5.6.42 and prior, 5.7.24 and prior and 8.0.13 and prior. Difficult to exploit vulnerability allows low privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Server executes to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server.
External References:
http://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
— Red Hat
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Connection Handling). Supported versions that are affected are 5.6.42 and prior, 5.7.24 and prior and 8.0.13 and prior. Difficult to exploit vulnerability allows low privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Server executes to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 6.4 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H).
— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2019-2503 vulnerability?
CVE-2019-2503 is a vulnerability in the MySQL Server component of Oracle MySQL that allows a low privileged attacker to exploit the server's connection handling mechanism.
Which software versions are affected by CVE-2019-2503?
The affected software versions are 5.6.42 and prior, 5.7.24 and prior, and 8.0.13 and prior.
What is the severity level of CVE-2019-2503?
The severity level of CVE-2019-2503 is medium, with a CVSS score of 6.4.
How can I fix CVE-2019-2503 vulnerability in MySQL?
To fix CVE-2019-2503 vulnerability in MySQL, update to version 5.6.43 (for 5.6.x), 5.7.25 (for 5.7.x), or 8.0.14 (for 8.0.x) or later.
Where can I find more information about CVE-2019-2503 vulnerability?
You can find more information about CVE-2019-2503 vulnerability in the official Oracle security advisory and the Red Hat Bugzilla reports.