CVE-2026-21936
published 2026-01-20CVE-2026-21936: Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and…
PriorityP422medium4.9CVSS 3.1
AVNACLPRHUINSUCNINAH
EPSS
0.34%
25.9th percentile
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | mysql-8.0 | < mysql-8.0 8.0.45-1 (sid) | mysql-8.0 8.0.45-1 (sid) |
| oracle | mysql_cluster | 7.6.0 – 7.6.36 | — |
| oracle | mysql_cluster | 8.0.0 – 8.0.44 | — |
| oracle | mysql_cluster | 8.4.0 – 8.4.7 | — |
| oracle | mysql_cluster | 9.0.0 – 9.5.0 | — |
| oracle | mysql_server | 8.0.0 – 8.0.44 | — |
| oracle | mysql_server | 8.4.0 – 8.4.7 | — |
| oracle | mysql_server | 9.0.0 – 9.5.0 | — |
| oracle_corporation | mysql_cluster | 7.6.0 – 7.6.36 | — |
| oracle_corporation | mysql_cluster | 8.0.0 – 8.0.44 | — |
| oracle_corporation | mysql_cluster | 8.4.0 – 8.4.7 | — |
| oracle_corporation | mysql_cluster | 9.0.0 – 9.5.0 | — |
| oracle_corporation | mysql_server | 8.0.0 – 8.0.44 | — |
| oracle_corporation | mysql_server | 8.4.0 – 8.4.7 | — |
| oracle_corporation | mysql_server | 9.0.0 – 9.5.0 | — |
CVSS provenance
nvdv3.14.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
osv4.9MEDIUM
vendor_debian4.9MEDIUM
vendor_oracle4.9MEDIUM
vendor_redhat4.9MEDIUM
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Ubuntu
MySQL vulnerabilities
vendor_ubuntu·2026-02-03
CVE-2025-53040 MySQL vulnerabilities
Title: MySQL vulnerabilities
Summary: Several security issues were fixed in MySQL.
Multiple security issues were discovered in MySQL and this update includes
a new upstream MySQL version to fix these issues.
MySQL has been updated to 8.0.45 in Ubuntu 20.04 LTS.
In addition to security fixes, the updated packages contain bug fixes, new
features, and possibly incompatible changes.
Please see the following for more information:
https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-45.html
https://www.oracle.com/security-alerts/cpujan2026.html
Instructions: In general, a standard system update will make all the necessary changes.
Ubuntu
MySQL vulnerabilities
vendor_ubuntu·2026-02-02
CVE-2026-21937 MySQL vulnerabilities
Title: MySQL vulnerabilities
Summary: Several security issues were fixed in MySQL.
Multiple security issues were discovered in MySQL and this update includes
new upstream MySQL versions to fix these issues.
MySQL has been updated to 8.0.45 in Ubuntu 22.04 LTS and Ubuntu 24.04 LTS.
Ubuntu 25.10 has been updated to MySQL 8.4.8.
In addition to security fixes, the updated packages contain bug fixes, new
features, and possibly incompatible changes.
Please see the following for more information:
https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-45.html
https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-8.html
https://www.oracle.com/security-alerts/cpujan2026.html
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
mysql: InnoDB unspecified vulnerability (CPU Jan 2026)
vendor_redhat·2026-01-20·CVSS 4.9
CVE-2026-21936 [MEDIUM] mysql: InnoDB unspecified vulnerability (CPU Jan 2026)
mysql: InnoDB unspecified vulnerability (CPU Jan 2026)
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Oracle CPU describes the issue as following: Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8
Oracle
Oracle Oracle MySQL Risk Matrix: Cluster: General — CVE-2026-21936
vendor_oracle·2026-01-15·CVSS 4.9
CVE-2026-21936 [MEDIUM] Oracle Oracle MySQL Risk Matrix: Cluster: General — CVE-2026-21936
Oracle Oracle MySQL Risk Matrix: Cluster: General vulnerability
CVE: CVE-2026-21936
CVSS: 4.9
Protocol: MySQL Protocol
Remote exploit: No
Affected versions: Network
Advisory: cpujan2026 (JAN 2026)
Debian
CVE-2026-21936: mysql-8.0 - Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). ...
vendor_debian·2026·CVSS 4.9
CVE-2026-21936 [MEDIUM] CVE-2026-21936: mysql-8.0 - Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). ...
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Scope: local
sid: resolved (fixed in 8.0.45-1)
GHSA
GHSA-p9xq-rj46-p3r9: Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB)
ghsa_unreviewed·2026-01-21
CVE-2026-21936 [MEDIUM] GHSA-p9xq-rj46-p3r9: Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB)
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
OSV
CVE-2026-21936: Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB)
osv·2026-01-20·CVSS 4.9
CVE-2026-21936 [MEDIUM] CVE-2026-21936: Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB)
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
No detection rules found.
No public exploits indexed.
2026-01-20
Published