CVE-2023-21963
libmysqlclient21: Vulnerability in the MySQL Server product of Oracle MySQL (component:Server: Connection Handling)
CVE-2023-21963 is fixed in 28 products on 1 platform, first by libmysqlclient20 5.7.41-0ubuntu0.18.04.1, released April 18, 2023. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0100
62nd percentile
Vulnerability in the MySQL Server product of Oracle MySQL (component:Server: Connection Handling). Supported versions that are affected are5.7.40 and prior and 8.0.31 and prior. Easily exploitable vulnerabilityallows high privileged attacker with network access via multiple protocolsto compromise MySQL Server. Successful attacks of this vulnerability canresult in unauthorized ability to cause a partial denial of service(partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.7 (Availabilityimpacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libmysqlclient20 · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | libmysqlclient20 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| libmysqlclient21 · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | libmysqlclient21 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| libmysqlclient21 · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | libmysqlclient21 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| libmysqlclient21 · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | libmysqlclient21 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mecab · RHEL 8 | 0:0.996-2.module+el8.8.0+18436+8918dd75 | RHSA-2023:3087 | May 16, 2023 |
| mecab · almalinux 8 | 0.996-2.module_el8.6.0+3340+d764b636 | ALSA-2023:3087 | May 16, 2023 |
| mecab · rocky 8 | 0:0.996-2.module+el8.10.0+1676+9b4b6e24 | RLSA-2023:3087 | Jun 28, 2026 |
| mecab-devel · RHEL 8 | 0:0.996-2.module+el8.8.0+18436+8918dd75 | RHSA-2023:3087 | May 16, 2023 |
| mecab-devel · almalinux 8 | 0.996-2.module_el8.6.0+3340+d764b636 | ALSA-2023:3087 | May 16, 2023 |
| mecab-ipadic · RHEL 8 | 0:2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2023:3087 | May 16, 2023 |
| mecab-ipadic · almalinux 8 | 2.7.0.20070801-16.module_el8.6.0+3340+d764b636 | ALSA-2023:3087 | May 16, 2023 |
| mecab-ipadic · rocky 8 | 0:2.7.0.20070801-16.module+el8.10.0+1676+9b4b6e24 | RLSA-2023:3087 | Jun 28, 2026 |
| mecab-ipadic-EUCJP · RHEL 8 | 0:2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2023:3087 | May 16, 2023 |
| mecab-ipadic-EUCJP · almalinux 8 | 2.7.0.20070801-16.module_el8.6.0+3340+d764b636 | ALSA-2023:3087 | May 16, 2023 |
| mysql · RHEL 8 | 0:8.0.32-1.module+el8.8.0+18446+fca6280e | RHSA-2023:3087 | May 16, 2023 |
| mysql · RHEL 9 | 0:8.0.32-1.el9_2 | RHSA-2023:2621 | May 9, 2023 |
| mysql · almalinux 8 | 8.0.32-1.module_el8.8.0+3567+56a616e4 | ALSA-2023:3087 | May 16, 2023 |
| mysql-client · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-client 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-client · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-client 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-client · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-client 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-client · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-client 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-client-5.7 · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-client-5.7 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-client-8.0 · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-client-8.0 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-client-8.0 · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-client-8.0 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-client-8.0 · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-client-8.0 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-client-core-5.7 · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-client-core-5.7 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-client-core-8.0 · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-client-core-8.0 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-client-core-8.0 · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-client-core-8.0 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-client-core-8.0 · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-client-core-8.0 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-common · RHEL 8 | 0:8.0.32-1.module+el8.8.0+18446+fca6280e | RHSA-2023:3087 | May 16, 2023 |
| mysql-common · RHEL 9 | 0:8.0.32-1.el9_2 | RHSA-2023:2621 | May 9, 2023 |
| mysql-common · almalinux 8 | 8.0.32-1.module_el8.8.0+3567+56a616e4 | ALSA-2023:3087 | May 16, 2023 |
| mysql-devel · RHEL 8 | 0:8.0.32-1.module+el8.8.0+18446+fca6280e | RHSA-2023:3087 | May 16, 2023 |
| mysql-devel · RHEL 9 | 0:8.0.32-1.el9_2 | RHSA-2023:2621 | May 9, 2023 |
| mysql-devel · almalinux 8 | 8.0.32-1.module_el8.8.0+3567+56a616e4 | ALSA-2023:3087 | May 16, 2023 |
| mysql-errmsg · RHEL 8 | 0:8.0.32-1.module+el8.8.0+18446+fca6280e | RHSA-2023:3087 | May 16, 2023 |
| mysql-errmsg · RHEL 9 | 0:8.0.32-1.el9_2 | RHSA-2023:2621 | May 9, 2023 |
| mysql-errmsg · almalinux 8 | 8.0.32-1.module_el8.8.0+3567+56a616e4 | ALSA-2023:3087 | May 16, 2023 |
| mysql-libs · RHEL 8 | 0:8.0.32-1.module+el8.8.0+18446+fca6280e | RHSA-2023:3087 | May 16, 2023 |
| mysql-libs · RHEL 9 | 0:8.0.32-1.el9_2 | RHSA-2023:2621 | May 9, 2023 |
| mysql-libs · almalinux 8 | 8.0.32-1.module_el8.8.0+3567+56a616e4 | ALSA-2023:3087 | May 16, 2023 |
| mysql-router · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-router 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-router · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-router 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-router · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-router 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-server · RHEL 8 | 0:8.0.32-1.module+el8.8.0+18446+fca6280e | RHSA-2023:3087 | May 16, 2023 |
| mysql-server · RHEL 9 | 0:8.0.32-1.el9_2 | RHSA-2023:2621 | May 9, 2023 |
| mysql-server · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-server 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-server · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-server 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-server · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-server 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-server · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-server 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-server · almalinux 8 | 8.0.32-1.module_el8.8.0+3567+56a616e4 | ALSA-2023:3087 | May 16, 2023 |
| mysql-server-5.7 · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-server-5.7 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-server-8.0 · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-server-8.0 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-server-8.0 · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-server-8.0 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-server-8.0 · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-server-8.0 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-server-core-5.7 · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-server-core-5.7 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-server-core-8.0 · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-server-core-8.0 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-server-core-8.0 · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-server-core-8.0 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-server-core-8.0 · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-server-core-8.0 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-source-5.7 · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-source-5.7 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-source-8.0 · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-source-8.0 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-source-8.0 · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-source-8.0 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-source-8.0 · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-source-8.0 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-test · RHEL 8 | 0:8.0.32-1.module+el8.8.0+18446+fca6280e | RHSA-2023:3087 | May 16, 2023 |
| mysql-test · RHEL 9 | 0:8.0.32-1.el9_2 | RHSA-2023:2621 | May 9, 2023 |
| mysql-test · almalinux 8 | 8.0.32-1.module_el8.8.0+3567+56a616e4 | ALSA-2023:3087 | May 16, 2023 |
| mysql-testsuite · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-testsuite 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-testsuite · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-testsuite 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-testsuite · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-testsuite 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-testsuite · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-testsuite 8.0.32-0ubuntu2 | Jan 16, 2026 |
| mysql-testsuite-5.7 · Ubuntu 18.04.6 LTS (bionic) | 5.7.41-0ubuntu0.18.04.1 | mysql-testsuite-5.7 5.7.41-0ubuntu0.18.04.1 | Apr 18, 2023 |
| mysql-testsuite-8.0 · Ubuntu 20.04 LTS (focal) | 8.0.32-0buntu0.20.04.1 | mysql-testsuite-8.0 8.0.32-0buntu0.20.04.1 | Oct 17, 2023 |
| mysql-testsuite-8.0 · Ubuntu 22.04.1 LTS (jammy) | 8.0.32-0buntu0.22.04.1 | mysql-testsuite-8.0 8.0.32-0buntu0.22.04.1 | Oct 17, 2023 |
| mysql-testsuite-8.0 · Ubuntu 24.10 (oracular) | 8.0.32-0ubuntu2 | mysql-testsuite-8.0 8.0.32-0ubuntu2 | Jan 16, 2026 |
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