# CVE-2021-35613: libmysqlclient21: Vulnerability in the MySQL Cluster product of Oracle MySQL (component:Cluster: General)

CVE-2021-35613 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-2021-35613
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0154
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2021

## Description

Vulnerability in the MySQL Cluster product of Oracle MySQL (component:Cluster: General). Supported versions that are affected are 8.0.26 andprior. Difficult to exploit vulnerability allows unauthenticated attackerwith network access via multiple protocols to compromise MySQL Cluster.Successful attacks of this vulnerability can result in unauthorized abilityto cause a partial denial of service (partial DOS) of MySQL Cluster. CVSS3.1 Base Score 3.7 (Availability impacts). CVSS Vector:(CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

## 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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