CVE-2026-47296 in SQL Server
Summary
by MITRE • 07/14/2026
Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical sql injection flaw in microsoft sql server that enables authenticated attackers to escalate their privileges locally through improper neutralization of special elements within sql commands. The weakness occurs when the sql server fails to properly sanitize or escape input parameters before incorporating them into sql queries, creating opportunities for malicious code execution. According to cwe-89, this classification specifically addresses sql injection vulnerabilities where attacker-controlled data is improperly integrated into database queries without adequate validation or sanitization mechanisms. The vulnerability's local privilege escalation aspect means that an attacker who already has legitimate access to the system can leverage this weakness to gain higher-level permissions, potentially moving from standard user accounts to administrative privileges within the sql server environment.
The operational impact of this vulnerability extends beyond simple data compromise as it provides attackers with pathways to execute arbitrary sql commands against the database. When an authenticated user can manipulate sql queries through poorly neutralized input elements, they may be able to extract sensitive information, modify database contents, or even execute operating system commands if proper security boundaries are not maintained. This type of vulnerability aligns with attack techniques documented in the mitre att&ck framework under the privilege escalation category, specifically targeting database access and command execution capabilities. The local nature of the attack means that network-based protections may not prevent exploitation since the attacker is already within the trusted environment, making detection more challenging and emphasizing the importance of internal security controls.
Mitigation strategies for this vulnerability must address both the immediate sql injection exposure and the privilege escalation opportunity it presents. Organizations should implement proper input validation and parameterized queries throughout their sql server applications to ensure that user-supplied data cannot be interpreted as sql commands. The principle of least privilege should be strictly enforced, limiting database access permissions to only those users who require specific capabilities for their legitimate operations. Additionally, regular security assessments and code reviews should focus on identifying sql injection vulnerabilities in all database interactions, particularly within stored procedures and dynamic sql execution contexts. Database administrators should also implement comprehensive monitoring solutions that can detect unusual sql query patterns or privilege escalation attempts, as these activities may indicate exploitation of this vulnerability. The implementation of web application firewalls and database activity monitoring tools can provide additional layers of protection against both the initial injection attack and subsequent privilege escalation efforts.