CVE-2025-50077 in MySQL Cluster
Summary
by MITRE • 07/15/2025
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). 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
The vulnerability identified as CVE-2025-50077 represents a significant availability risk within Oracle MySQL Server's InnoDB storage engine component. This flaw affects multiple version ranges including 8.0.0 through 8.0.42, 8.4.0 through 8.4.5, and 9.0.0 through 9.3.0, indicating a broad impact across MySQL's major releases. The vulnerability's classification as easily exploitable suggests that attackers with high privileged access and network connectivity can leverage this weakness to compromise the target system. The CVSS 3.1 base score of 4.9 reflects the moderate to high severity impact, particularly emphasizing the availability impact with a maximum score of 8.0 for the availability vector.
The technical nature of this vulnerability stems from the InnoDB storage engine's handling of specific database operations that can trigger a denial of service condition. When exploited, the vulnerability allows an attacker to cause the MySQL Server to hang or repeatedly crash, effectively rendering the database service unavailable to legitimate users and applications. This type of vulnerability typically involves memory management issues, resource exhaustion, or improper state handling within the database engine's core processing routines. The attack vector requiring network access via multiple protocols indicates that the flaw can be exploited across different communication channels, potentially making it more accessible to attackers.
The operational impact of this vulnerability extends beyond simple service disruption, as database downtime can cascade into broader system failures within applications that depend on MySQL services. Organizations utilizing affected MySQL versions face potential business disruption, data access delays, and increased operational overhead during incident response and recovery activities. The high privilege requirement suggests that this vulnerability likely targets administrative accounts or processes with elevated database permissions, making it particularly concerning for environments where privileged access is less strictly controlled. The complete denial of service condition means that systems could experience prolonged unavailability until manual intervention or service restart occurs.
Mitigation strategies should prioritize immediate patching of affected MySQL versions to address the underlying InnoDB storage engine flaw. Organizations should also implement network segmentation and access controls to limit exposure of MySQL services to untrusted networks. Monitoring and logging configurations should be enhanced to detect unusual patterns that might indicate exploitation attempts, including repeated connection failures or service disruptions. The vulnerability aligns with CWE-400, which covers "Uncontrolled Resource Consumption," and potentially maps to ATT&CK techniques related to denial of service operations. Security teams should conduct comprehensive vulnerability assessments of their MySQL deployments and consider implementing additional redundancy measures to minimize impact from similar future vulnerabilities.