CVE-2026-56841 in UniFi Protect Application
Summary
by MITRE • 07/02/2026
A malicious actor with access to the network and low privileges could exploit an authenticated SQL Injection vulnerability found in UniFi Protect Application to escalate privileges on the host device.
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Analysis
by VulDB Data Team • 07/02/2026
The vulnerability under examination represents a critical authenticated sql injection flaw within the UniFi Protect Application ecosystem that enables attackers with minimal network access and low privilege accounts to achieve unauthorized privilege escalation on target host devices. This security weakness exists within the application's database interaction mechanisms where user input is not properly sanitized before being incorporated into sql query structures. The vulnerability demonstrates characteristics consistent with cwe-89 sql injection patterns, specifically exposing the application to malicious sql command execution through improperly validated user-supplied data. Attackers can leverage this weakness by crafting specially formatted inputs that manipulate the underlying database queries to execute arbitrary commands with elevated privileges on the host system.
The operational impact of this vulnerability extends beyond simple data compromise as it provides attackers with the capability to elevate their access level from standard user privileges to administrative control over the affected devices. This privilege escalation mechanism allows malicious actors to modify application configurations, access sensitive data stores, and potentially establish persistent access points within the network infrastructure. The exploitation process typically involves sending crafted sql injection payloads through authenticated application interfaces where the system processes these inputs without adequate validation or sanitization measures. The vulnerability affects the UniFi Protect Application's authentication and authorization mechanisms, creating a pathway for attackers to bypass normal access controls and gain unauthorized administrative capabilities.
Security professionals should recognize this vulnerability as a significant threat vector within unified threat management frameworks, particularly concerning network infrastructure monitoring solutions. The flaw aligns with attack techniques documented in the mitre att&ck framework under privilege escalation tactics, specifically targeting application-level vulnerabilities that can be exploited to gain system-level access. Organizations utilizing UniFi Protect systems must consider immediate remediation efforts including application patching, input validation enforcement, and network segmentation measures to prevent unauthorized access. The vulnerability also highlights the importance of implementing proper database security controls such as parameterized queries and privilege separation between application components and database engines.
Mitigation strategies should encompass both immediate defensive measures and long-term architectural improvements to address the underlying sql injection weakness. Application developers and system administrators must implement comprehensive input validation mechanisms that filter and sanitize all user-supplied data before processing, adhering to secure coding practices recommended by industry standards such as owasp top ten and iso/iec 27001 security requirements. Network-level protections including web application firewalls and intrusion detection systems can provide additional layers of defense against exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses across the entire infrastructure, while access control policies must be strictly enforced to minimize the potential impact of compromised accounts. The implementation of principle of least privilege configurations combined with regular security updates will significantly reduce the risk surface associated with this vulnerability class and similar authentication bypass threats.