PT-2025-4247 · Oracle+6 · Mysql Server+5
Published
2025-01-21
·
Updated
2025-05-19
·
CVE-2025-21521
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
MySQL Server versions 8.0.39 and prior
MySQL Server versions 8.4.2 and prior
MySQL Server versions 9.0.1 and prior
Description
The vulnerability in the MySQL Server product of Oracle MySQL, specifically in the Server: Thread Pooling component, can be exploited by an unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks can result in the unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. This issue is related to resource exhaustion, which can be triggered remotely.
Recommendations
For MySQL Server versions 8.0.39 and prior, update to a version later than 8.0.39 to resolve the issue.
For MySQL Server versions 8.4.2 and prior, update to a version later than 8.4.2 to resolve the issue.
For MySQL Server versions 9.0.1 and prior, update to a version later than 9.0.1 to resolve the issue.
As a temporary workaround, consider restricting network access to the MySQL Server to minimize the risk of exploitation.
Fix
DoS
Allocation of Resources Without Limits
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Centos
Mysql Server
Red Hat
Rocky Linux