CVE-2025-21505 is a medium severity vulnerability in the MySQL Server product of Oracle MySQL. Supported versions that are affected include 8.0.40 and prior, 8.4.3 and prior, and 9.1.0 and prior. This vulnerability allows a high privileged attacker with network access via multiple protocols to compromise MySQL Server.
Successful attacks can result in an unauthorized ability to cause a hang or frequently repeatable crash, leading to a complete denial of service (DoS) of the MySQL Server. The CVSS 3.1 Base Score is 4.9, indicating significant availability impacts.
Organizations should prioritize patching immediately to prevent potential service disruptions. The urgency is heightened due to the ease of exploitation associated with this vulnerability.
The vulnerability was published on January 21, 2025, and has since been classified as modified. It is crucial for security teams to stay informed and take the necessary steps to mitigate risks.
The following sections will delve into the specific details of the vulnerability, including technical analysis, risk assessment, and mitigation strategies.
Vulnerability Details
CVE-2025-21505 is classified as a vulnerability in the MySQL Server product, particularly in the components services. The official description states that this vulnerability allows a high privileged attacker to exploit the system, leading to potential service outages.
The vulnerability has a CVSS score of 4.9, indicating a medium severity level. The attack vector is network-based, with low attack complexity, high privileges required, and no user interaction necessary.
Affected products include MySQL Server versions up to and including 8.0.40, 8.4.3, and 9.1.0. The vulnerability is categorized under the CWE ID CWE-770.
Technical Analysis
The root cause of this vulnerability lies in the MySQL Server component that fails to adequately validate inputs or manage network resources. This oversight allows attackers to exploit the system with high privileges.
Attackers may leverage this vulnerability through network access, exploiting the server's services. The complexity of the attack is low, making it feasible for various attacker profiles.
Specific privileges are required for the attack, which means that only users with higher access levels can successfully execute it. Importantly, no user interaction is needed, enhancing the risk level.
Risk & Impact Analysis
Risk to organizations includes the potential for complete service outages. The blast radius is significant as this vulnerability affects core functionalities of MySQL Server, which many applications rely on.
Organizations should assess the urgency based on the CVSS score of 4.9. This medium severity indicates that it should be addressed in the priority patch cycle to mitigate risks effectively.
Monitoring and alerting mechanisms should be in place to detect possible exploitation attempts or anomalous behavior associated with this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Affected versions include MySQL Server 8.0.40 and prior, 8.4.3 and prior, and 9.1.0 and prior. Organizations using these versions should prioritize remediation.
Mitigation & Remediation
To mitigate the risks associated with CVE-2025-21505, organizations should apply patches provided by Oracle. Regular updates are crucial for maintaining security.
If patches are unavailable, consider implementing configuration hardening and network controls to limit access to the database server. Continuous monitoring is recommended to detect any unusual activity.
For further insights on continuous security testing, organizations should refer to continuous penetration testing services.
Detection Guidance
Organizations should monitor log indicators for unauthorized access attempts. Behavioral anomalies in database operations can signal attempts to exploit the vulnerability.
Network signatures may help in detecting possible exploitation attempts. Regular audits and monitoring of system changes are recommended to maintain security posture.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-21505 highlights the importance of robust security practices in database management. Organizations must recognize the potential risks associated with vulnerabilities in widely-used database systems.
Security teams should adopt a proactive approach to identifying and addressing vulnerabilities. This includes implementing a vulnerability management program and conducting regular security assessments.
For organizations using Oracle products, implementing secure coding practices can help mitigate risks associated with vulnerabilities. This can be supported by resources like the secure coding practices guide and other security frameworks.
Ultimately, understanding the implications of CVE-2025-21505 serves as a reminder for businesses to prioritize database security and remain vigilant against emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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