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Vulnerabilities

Vulnerability · CVE-2019-2503

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Connection Handling).

Published Jan 16, 2019 · catalog updated Jun 17, 2026 · Vulnerability in the MySQL

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2019-2503. EPSS is 2.51%. Act only if a listed version of Vulnerability in the MySQL is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Vulnerability in the MySQL).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.51%
Remediation
Version ranges on file
Affected products
cpe mariadb/mariadb · cpe oracle/mysql

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).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mariadb/mariadb< 10.0.37
  • cpe mariadb/mariadb< 10.1.36
  • cpe mariadb/mariadb< 5.5.62
  • cpe oracle/mysql>= 5.6.0, <= 5.6.42
  • cpe oracle/mysql>= 5.7.0, <= 5.7.24
  • cpe oracle/mysql>= 8.0.0, <= 8.0.13

How to fix CVE-2019-2503

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2019-2503. EPSS is 2.51%. Act only if a listed version of Vulnerability in the MySQL is installed.

Which versions are affected?

Compare what you have installed with < 10.0.37, < 10.1.36, < 5.5.62, >= 5.6.0, <= 5.6.42, >= 5.7.0, <= 5.7.24, >= 8.0.0, <= 8.0.13. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 2.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

MySQL security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 16, 2019 · Monitored products — high

    Detected

    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 Serv

  2. Jun 17, 2026 · Monitored products — high

    Updated

    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 Serv

Sources

  • CVE.orgVulnerability recordCVE-2019-2503

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2019-2503

    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 Serv

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 2, 2026
  • Monitored products — highNov 1, 2026