CVE-2026-11851 in ASUS
Summary
by MITRE • 07/15/2026
Improper Neutralization of Special Elements used in an SQL Command ("SQL Injection") in the web management interface of certain ASUS router models allows a remote authenticated user to disclose confidential information via a crafted request that bypasses existing input validation Refer to the ' Security Update for ASUS Router Firmware ' section on the ASUS Security Advisory for more information.
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Analysis
by VulDB Data Team • 07/15/2026
This vulnerability represents a critical sql injection flaw in the web management interface of specific asus router models, categorized under cwe-89 sql injection. The weakness occurs when the device fails to properly sanitize user input before incorporating it into sql commands executed by the backend database system. Remote authenticated attackers can exploit this vulnerability by crafting malicious requests that bypass existing input validation mechanisms, allowing them to extract confidential information from the router's database. The vulnerability specifically targets the web management interface, which means attackers must first authenticate to the device with valid credentials, though this requirement does not prevent exploitation given the severity of potential data disclosure.
The technical implementation of this flaw involves improper neutralization of special elements within sql commands, where user-supplied parameters are directly concatenated into sql queries without adequate sanitization or parameterization. This creates an environment where malicious input can alter the intended structure of sql statements, potentially enabling attackers to access unauthorized database tables, retrieve sensitive configuration data, user credentials, or other confidential information stored within the router's system. The bypass of existing input validation suggests that the device employs basic filtering mechanisms that can be circumvented through sophisticated payload construction.
Operationally, this vulnerability poses significant risks to network security and device integrity. Attackers with valid authentication credentials can leverage this flaw to escalate their privileges and access sensitive data that should remain protected within the router's secure zones. The impact extends beyond simple information disclosure, as the retrieved data could include administrative passwords, network configuration parameters, or other system details that could facilitate further attacks on the connected network infrastructure. This vulnerability directly aligns with attack techniques documented in the attack framework under initial access and credential access phases.
Mitigation strategies should prioritize immediate firmware updates from asus security advisory releases, which contain patches specifically addressing this sql injection weakness. Network administrators must ensure all affected router models receive the latest security updates to prevent exploitation. Additionally, implementing network segmentation, limiting administrative access to trusted networks, and monitoring for anomalous authentication patterns can help detect potential exploitation attempts. The vulnerability demonstrates the importance of robust input validation and proper sql query construction practices, aligning with security best practices outlined in owasp top ten and nist cybersecurity frameworks that emphasize the critical nature of preventing injection attacks through parameterized queries and comprehensive input sanitization techniques.