Denial of Service Vulnerability in MySQL Server by Oracle
CVE-2025-21543

4.9MEDIUM

Key Information:

Vendor

Oracle
Status
Mysql Cluster
Mysql Server
Vendor
CVE Published:
21 January 2025

What is CVE-2025-21543?

This vulnerability affects Oracle's MySQL Server, allowing a high-privileged attacker with network access via various protocols to potentially compromise the server. Exploiting this vulnerability can lead to a denial-of-service (DoS) condition, causing the MySQL Server to hang or crash repeatedly. This presents significant risks for businesses relying on MySQL databases, as it can disrupt operations and affect availability.

Affected Version(s)

MySQL Cluster * <= 7.6.32

MySQL Cluster * <= 8.0.40

MySQL Cluster * <= 8.4.3

References

https://www.oracle.com/security-alerts/cpujan2025.html
vendor-advisory

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.