# CVE-2021-2471: libmysqlclient21: Vulnerability in the MySQL Connectors product of Oracle MySQL (component:Connector/J)

CVE-2021-2471 is fixed in 11 products on 1 platform, first by libmysqlclient21 8.0.27-0ubuntu0.20.04.1, released January 19, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-2471
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0749
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2021

## Description

Vulnerability in the MySQL Connectors product of Oracle MySQL (component:Connector/J). Supported versions that are affected are 8.0.26 and prior.Difficult to exploit vulnerability allows high privileged attacker withnetwork access via multiple protocols to compromise MySQL Connectors.Successful attacks of this vulnerability can result in unauthorized accessto critical data or complete access to all MySQL Connectors accessible dataand unauthorized ability to cause a hang or frequently repeatable crash(complete DOS) of MySQL Connectors. CVSS 3.1 Base Score 5.9(Confidentiality and Availability impacts). CVSS Vector:(CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libmysqlclient21 Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [libmysqlclient21 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmysqlclient21-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | libmysqlclient21 Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [libmysqlclient21 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libmysqlclient21-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | libmysqlclient21 Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [libmysqlclient21 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libmysqlclient21-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-client Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-client 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-client-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-client Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-client 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-client-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-client Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-client 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-client-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-client-8.0 Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-client-8.0 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-client-8.0-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-client-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-client-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-client-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-client-8.0 Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-client-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-client-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-client-core-8.0 Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-client-core-8.0 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-client-core-8.0-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-client-core-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-client-core-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-client-core-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-client-core-8.0 Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-client-core-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-client-core-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-router Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-router 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-router-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-router Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-router 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-router-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-router Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-router 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-router-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-server Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-server 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-server-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-server Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-server 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-server-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-server Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-server 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-server-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-server-8.0 Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-server-8.0 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-server-8.0-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-server-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-server-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-server-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-server-8.0 Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-server-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-server-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-server-core-8.0 Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-server-core-8.0 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-server-core-8.0-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-server-core-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-server-core-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-server-core-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-server-core-8.0 Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-server-core-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-server-core-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-source-8.0 Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-source-8.0 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-source-8.0-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-source-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-source-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-source-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-source-8.0 Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-source-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-source-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-testsuite Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-testsuite 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-testsuite-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-testsuite Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-testsuite 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-testsuite-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-testsuite Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-testsuite 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-testsuite-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |
| Linux | mysql-testsuite-8.0 Ubuntu 20.04 LTS (focal) | 8.0.27-0ubuntu0.20.04.1 | [mysql-testsuite-8.0 8.0.27-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-mysql-testsuite-8.0-8.0.27-0ubuntu0.20.04.1.md) | Jan 19, 2022 |
| Linux | mysql-testsuite-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.27-0ubuntu0.21.10.1 | [mysql-testsuite-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mysql-testsuite-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 19, 2022 |
| Linux | mysql-testsuite-8.0 Ubuntu 24.10 (oracular) | 8.0.27-0ubuntu0.21.10.1 | [mysql-testsuite-8.0 8.0.27-0ubuntu0.21.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-mysql-testsuite-8.0-8.0.27-0ubuntu0.21.10.1.md) | Jan 16, 2026 |

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