CVE-2021-2144 Privilege escalation in MySQL Server
A high-privileged attacker can compromise the MySQL Server via the parser, leading to full server takeover.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-2144?
CVE-2021-2144 is a high-severity vulnerability in Mariadb Mariadb, published on 22 Apr 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser). Supported versions that are affected are 5.7.29 and prior and 8.0.19 and prior. 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 takeover of MySQL Server. CVSS 3.1 Base Score 7.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
Which versions are affected by CVE-2021-2144?
3 open source packages ship an affected version, including mariadb, mariadb-min and mysql-client. It affects 6 products.
| Package | Affected | Fixed in |
|---|---|---|
mariadb Bitnami | From 5.5.0 | 5.5.66, 10.1.42, 10.2.28, 10.3.19, 10.4.9 |
mariadb-min Bitnami | From 5.5.0 | 5.5.66, 10.1.42, 10.2.28, 10.3.19, 10.4.9 |
mysql-client Bitnami | From 5.5.0 | 5.5.66, 10.1.42, 10.2.28, 10.3.19, 10.4.9 |
Products include Mariadb Mariadb, Netapp Active Iq Unified Manager, Netapp Oncommand Insight, Netapp Oncommand Workflow Automation, Netapp Snapcenter, Oracle Mysql.
How do I fix CVE-2021-2144?
Upgrade mariadb to a fixed version for your release line: 5.5.66, 10.1.42, 10.2.28 or 10.3.19.
Is CVE-2021-2144 being exploited?
There is no known exploitation of CVE-2021-2144 in the wild and no public exploit code.
Other vulnerabilities in Mariadb Mariadb
- CVE-2026-49261 MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`
- CVE-2026-85746 MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections
- CVE-2026-85748 MariaDB: Use-after-free with a large number of SYS_REFCURSOR's
- CVE-2026-92262 MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass.
- CVE-2023-26785 Code injection in n/a
Sources
Also known as BIT-mariadb-2021-2144, BIT-mariadb-min-2021-2144, BIT-mysql-client-2021-2144, GHSA-m8h9-m594-xwrv, UBUNTU-CVE-2021-2144.