CVE-2025-21490

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 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 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).

How to fix CVE-2025-21490

To remediate CVE-2025-21490, upgrade the affected package to a fixed version below.

—upgrade to 10.11.11-r0 or later
—upgrade to 10.5.28 or later
—upgrade to 11.4.7 or later
—upgrade to 10.6.21 or later
—upgrade to 1:10.11.11-0+deb12u1 or later
—upgrade to 1:10.5.28-0+deb11u1 or later
—upgrade to 1:10.5.28-0+deb11u1 or later

Is CVE-2025-21490 being exploited?

Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.

Affected packages (7)

from 0, < 10.11.11-r0
from 0, < 10.5.28, >= 10.6.0, < 10.6.21, >= 10.7.0, < 10.11.11, >= 11.0.0, < 11.4.5, >= 11.5.0, < 11.7.2
from 0, < 11.4.7, >= 11.5.0, < 11.8.2
from 0, < 10.6.21, >= 10.7.0, < 10.11.11, >= 11.0.0, < 11.4.5, >= 11.5.0, < 11.8.2
from 0, < 1:10.11.11-0+deb12u1
from 0, < 1:10.5.28-0+deb11u1
from 0, < 1:10.5.28-0+deb11u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM4.9	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H