CVE-2025-53062 is a vulnerability identified in Oracle MySQL Server affecting multiple supported versions, specifically 8.0.0 to 8.0.43, 8.4.0 to 8.4.6, and 9.0.0 to 9.4.0. The flaw resides in the InnoDB storage engine component and allows an attacker with high privileges and network access via multiple protocols to cause a denial of service (DoS) condition. The attack results in the MySQL Server hanging or crashing repeatedly, leading to complete service unavailability. The vulnerability is classified under CWE-400, indicating a resource exhaustion or DoS condition. The CVSS 3.1 base score is 4.9, with vector AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H, meaning the attack can be launched remotely over the network with low complexity but requires high privileges and no user interaction. The impact is limited to availability, with no confidentiality or integrity compromise. No public exploits have been reported yet, but the vulnerability is considered easily exploitable by authorized users. This vulnerability poses a risk to environments where MySQL is used for critical database operations, potentially causing downtime and service interruptions. Oracle has not yet provided patches at the time of this report, so mitigation relies on access control and monitoring.

For European organizations, this vulnerability primarily threatens the availability of MySQL database services. Organizations relying on MySQL for critical applications, including financial services, e-commerce, healthcare, and public sector systems, could experience service outages if exploited. The requirement for high privileges reduces the risk of external attackers exploiting this vulnerability directly; however, insider threats or compromised accounts with elevated privileges could trigger denial of service conditions. This could lead to operational disruptions, loss of productivity, and potential cascading effects on dependent applications and services. Additionally, organizations with strict uptime requirements or service level agreements (SLAs) may face reputational damage and financial penalties. The lack of confidentiality or integrity impact limits the risk of data breaches but does not diminish the operational risk posed by service unavailability.

1. Restrict network access to MySQL servers by implementing strict firewall rules and network segmentation to limit exposure to trusted hosts and administrative networks only. 2. Enforce the principle of least privilege by auditing and minimizing user accounts with high privileges on MySQL servers. 3. Monitor MySQL server logs and system performance metrics for unusual activity or signs of resource exhaustion that could indicate exploitation attempts. 4. Prepare for patch deployment by closely monitoring Oracle's security advisories and applying updates promptly once patches become available. 5. Implement redundancy and failover mechanisms for MySQL services to reduce downtime impact in case of a DoS event. 6. Conduct regular security reviews and penetration testing focusing on privilege escalation and resource exhaustion scenarios. 7. Use network-level intrusion detection/prevention systems (IDS/IPS) to detect and block suspicious traffic targeting MySQL protocols. 8. Educate administrators about the risks of high privilege misuse and enforce strong authentication and session management controls.