CVE-2025-21519 Missing authorization in MySQL Server
A high-privileged attacker can cause a complete denial of service in MySQL Server due to improper privilege management.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-21519?
CVE-2025-21519 is a medium-severity missing authorization vulnerability in Oracle Mysql Server, published on 21 Jan 2025. 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: Security: Privileges). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-863
Which versions are affected by CVE-2025-21519?
It affects 1 product.
Products include Oracle Mysql Server.
How do I fix CVE-2025-21519?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-21519 being exploited?
There is no known exploitation of CVE-2025-21519 in the wild and no public exploit code.
Other vulnerabilities in Oracle Mysql Server
Sources
Also known as GHSA-945p-45hq-35x9, MINI-3837-6r4j-6mwr, MINI-jrgr-657p-9623, MINI-q7wh-v458-6p9c, UBUNTU-CVE-2025-21519.