CVE-2025-21577 Denial of service in MySQL Server
A low-privileged attacker can cause a complete denial of service in MySQL Server via network access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-21577?
CVE-2025-21577 is a medium-severity denial of service vulnerability in Oracle Mysql Server, published on 15 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.41, 8.4.0-8.4.4 and 9.0.0-9.2.0. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-400
Which versions are affected by CVE-2025-21577?
It affects 1 product.
Products include Oracle Mysql Server.
How do I fix CVE-2025-21577?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-21577 being exploited?
There is no known exploitation of CVE-2025-21577 in the wild and no public exploit code.
Other vulnerabilities in Oracle Mysql Server
Sources
Also known as AZL-62113, AZL-62138, GHSA-pxc5-947h-65gr, MINI-26vp-3jrr-wh86, MINI-fgvh-x7wv-73rg, MINI-w97g-q7ww-j59m and 1 more.