CVE-2025-50097 in MySQL Server
Summary
by MITRE • 07/15/2025
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. 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).
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Analysis
by VulDB Data Team • 12/02/2025
This vulnerability resides within the MySQL Server security encryption component of Oracle MySQL, specifically affecting versions ranging from 8.0.0 through 8.0.42, 8.4.0 through 8.4.5, and 9.0.0 through 9.3.0. The flaw represents a significant availability risk that can be exploited by attackers with high privileges and network access through multiple protocols. The vulnerability's classification as easily exploitable indicates that the attack surface is relatively accessible to threat actors who possess elevated privileges within the network environment. This particular weakness falls under CWE-400, which encompasses improper handling of resource exhaustion conditions, specifically manifesting in denial of service scenarios through server crashes or hangs. The CVSS 3.1 scoring of 4.9 reflects the severity of the availability impact, with the vector AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H indicating network-based exploitation requiring low attack complexity but high privilege requirements, with no user interaction needed and universal scope. The vulnerability's impact extends beyond simple service disruption as it can cause complete system hangs or frequently repeatable crashes, effectively rendering the database server unavailable to legitimate users and applications that depend on its services.
The technical exploitation of this vulnerability occurs through the manipulation of encryption-related functions within the MySQL server's security framework. Attackers with high-privilege access can leverage specific encryption parameters or operations to trigger memory corruption or resource exhaustion conditions that lead to system instability. This type of attack vector aligns with ATT&CK technique T1499.004, which focuses on network denial of service attacks targeting database systems. The encryption component's failure to properly validate or handle certain input parameters during cryptographic operations creates a pathway for malicious actors to consume excessive system resources or corrupt internal server structures. The fact that this vulnerability affects multiple version ranges suggests a fundamental flaw in the encryption implementation that has persisted across different MySQL releases, indicating that the root cause likely stems from improper resource management or inadequate input validation within the core encryption routines. This particular weakness demonstrates how cryptographic implementations can become attack vectors when not properly secured against malicious input manipulation.
The operational impact of this vulnerability extends far beyond immediate service disruption, as MySQL servers form the backbone of numerous enterprise applications and web services. When a MySQL server experiences complete denial of service through system hangs or crashes, it can cascade into broader business disruptions affecting multiple dependent applications and services. Organizations relying on MySQL for critical database operations may face significant downtime, data access restrictions, and potential revenue loss during the period when the server remains compromised. The vulnerability's requirement for high-privilege access provides some mitigation through proper access controls, but it also highlights the critical importance of principle of least privilege implementation and robust network segmentation. The availability impact of CVSS 3.1 score 4.9 indicates that this vulnerability can cause serious disruption to database operations, potentially requiring system restarts, manual intervention, and extensive recovery procedures. Organizations may need to implement emergency response protocols, including immediate patching, system monitoring, and potential service degradation strategies to maintain business continuity during exploitation periods.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security hardening measures. The primary recommendation involves applying the latest security patches and updates provided by Oracle to resolve the specific encryption-related flaw. Organizations should prioritize patch deployment across all affected MySQL versions, particularly those running in production environments where the impact of service disruption would be most severe. Network segmentation and access control measures should be enhanced to limit the attack surface, ensuring that only authorized personnel possess high-privilege access to MySQL servers. Implementing comprehensive monitoring solutions that can detect unusual resource consumption patterns or encryption-related anomalies will help identify potential exploitation attempts before they cause complete system failures. Security teams should also consider implementing database activity monitoring tools that can track privilege escalation attempts and unusual encryption parameter usage that might indicate exploitation activity. The vulnerability's classification as a resource exhaustion issue suggests that implementing proper resource limits and connection pooling mechanisms could provide additional defense-in-depth layers. Organizations should also conduct regular security assessments focusing on encryption implementation practices and ensure that their MySQL installations follow secure configuration guidelines to prevent exploitation of similar vulnerabilities in the future.