CVE-2025-59499 in SQL Server
Summary
by MITRE • 11/11/2025
Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.
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Analysis
by VulDB Data Team • 11/19/2025
This vulnerability represents a critical sql injection flaw in microsoft sql server that enables authenticated attackers to escalate their privileges through malicious sql commands. The weakness occurs when the system fails to properly sanitize or escape special characters in sql queries, allowing an attacker with valid credentials to manipulate the underlying database operations. The vulnerability falls under the common weakness enumeration category CWE-89 sql injection, which is classified as a high severity issue in the software security community. Attackers can exploit this by crafting malicious sql payloads that bypass authentication mechanisms and gain elevated access rights to database resources. The security implications extend beyond simple data manipulation as the privilege escalation capability allows attackers to potentially access sensitive information, modify database structures, or even execute administrative commands. This type of vulnerability is particularly dangerous in enterprise environments where sql server instances often contain critical business data and administrative controls. The attack vector requires an authenticated user context, meaning that an attacker must first obtain valid credentials before attempting exploitation, but once achieved, the impact can be severe. The vulnerability aligns with several techniques documented in the attack tree framework, specifically targeting the privilege escalation and command execution phases of cyber attacks. Organizations using sql server databases face significant risk if this vulnerability remains unpatched, as it creates a pathway for lateral movement within database networks and potential data exfiltration. The flaw demonstrates a fundamental breakdown in input validation and query construction processes, where special sql characters such as semicolons, quotes, and comment markers are not properly neutralized. This type of vulnerability is commonly exploited in advanced persistent threat campaigns where attackers seek to maintain long-term access to database environments. The exploitation typically involves crafting sql statements that can bypass existing security controls and execute unintended database operations. Security professionals should consider this vulnerability in their risk assessments and prioritize remediation efforts alongside other critical sql injection vulnerabilities. The impact on database integrity and confidentiality makes this a significant concern for organizations handling sensitive data. Mitigation strategies should include implementing proper input validation, using parameterized queries, and ensuring that database accounts follow the principle of least privilege. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in sql server configurations and application code that may provide similar attack surfaces. The vulnerability also highlights the importance of maintaining current security patches and implementing robust database monitoring solutions to detect anomalous sql execution patterns. Organizations should review their database access controls and ensure that administrative privileges are not granted to users who do not require them for their operational duties. The attack scenario typically involves an attacker who has already obtained valid credentials and seeks to leverage this vulnerability to gain additional access rights within the sql server environment. This creates a multi-layered security challenge where both authentication and authorization controls must be strengthened to prevent such privilege escalation attacks. The vulnerability's classification under sql injection standards emphasizes the need for comprehensive defensive measures including web application firewalls, database activity monitoring, and regular code reviews to prevent similar issues in custom application development.