# CVE-2025-50076: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML).  Supported versions that are affected are 8.0.0-8.0.25. Easily exploitable vulnerability allows low 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 3.1 Base Score 6.5 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVE-2025-50076 is fixed in 11 products on 1 platform, first by libmysqlclient21 8.0.26-0ubuntu1, released July 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-50076
- Priority: Routine
- CVSS: 6.5 (Moderate)
- EPSS: 0.0063
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 15, 2025
- Weakness: Uncontrolled Resource Consumption
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-50076

## Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML).  Supported versions that are affected are 8.0.0-8.0.25. Easily exploitable vulnerability allows low 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 3.1 Base Score 6.5 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libmysqlclient21 Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [libmysqlclient21 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libmysqlclient21-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-client Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-client 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-client-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-client-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-client-8.0 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-client-8.0-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-client-core-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-client-core-8.0 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-client-core-8.0-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-router Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-router 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-router-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-server Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-server 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-server-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-server-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-server-8.0 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-server-8.0-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-server-core-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-server-core-8.0 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-server-core-8.0-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-source-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-source-8.0 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-source-8.0-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-testsuite Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-testsuite 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-testsuite-8.0.26-0ubuntu1.md) | Jul 15, 2025 |
| Linux | mysql-testsuite-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.26-0ubuntu1 | [mysql-testsuite-8.0 8.0.26-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-testsuite-8.0-8.0.26-0ubuntu1.md) | Jul 15, 2025 |

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