CVE-2026-25088: Authenticated SQL Injection in Fortinet FortiNDR Enables Command Execution

Executive Summary

CVE-2026-25088 is an improper neutralization of special elements in an SQL command inside Fortinet FortiNDR, allowing an authenticated attacker to execute unauthorized code or commands through crafted HTTP requests. The physical criticality is indirect but severe: FortiNDR is the network detection layer that many industrial operators rely on to see lateral movement inside their environments, and compromise of that appliance turns the sensor into a blind spot or a pivot point.

Technical Exposure Breakdown

The vulnerable component is the FortiNDR management and analysis interface, specifically the SQL query handling that processes attacker-supplied input from HTTP request parameters. Affected builds span FortiNDR 7.6.0 through 7.6.2, 7.4.0 through 7.4.9, and all versions in the 7.2, 7.1, and 7.0 trains. The defect is a classic failure to parameterize or sanitize input before it reaches the database engine, which permits an authenticated session to inject SQL that the backend executes with the privileges of the database service.

The CVSS score of 8.8 reflects the escalation path. Authentication is required, but the impact once authenticated moves beyond data disclosure into code or command execution. In practical terms an attacker who has valid credentials, a captured session, or a foothold on an administrative workstation can push the injection to a level where operating system commands run on the appliance itself. That converts a monitoring device into an execution platform sitting on a network segment that watches sensitive traffic.

The authentication requirement is not the mitigation it appears to be. In OT environments FortiNDR consoles are frequently administered from shared jump hosts, and credentials are often long-lived and reused across the security stack. An adversary who reaches the IT/OT boundary through phishing or a compromised engineering workstation inherits exactly the position needed to reach this interface.

OT Impact and Compliance Risk

FortiNDR is a detection asset, not a control asset, so it does not directly command a PLC or a safety instrumented system. The physical risk is that the tool operators depend on to detect an intrusion becomes owned by the intruder. A compromised FortiNDR can be silenced, its alerting suppressed, and its position used to observe or interfere with mirrored OT traffic feeding into it.

For NERC CIP registered entities, a monitoring appliance that touches Electronic Security Perimeter traffic falls under CIP-005 and CIP-007 patch management and security event monitoring obligations. Loss of integrity on that device undermines CIP-008 incident detection assumptions. Under IEC 62443, the appliance is part of the security zone conduit monitoring, and an execution flaw here degrades the detection controls the zone model depends on. Pipeline operators bound by TSA SD-02C should treat this as a monitoring integrity failure that affects required continuous detection capability. Water utilities under AWIA 2018 that deployed FortiNDR for network visibility lose the assurance that their detection layer is trustworthy.

Compensating Controls

Do not rely on active scanning to inventory affected FortiNDR instances in a production OT segment. Aggressive probing of appliances that inspect industrial traffic can disrupt mirrored feeds and, in poorly isolated deployments, cascade into the components being monitored.

Immediate controls: restrict administrative access to the FortiNDR interface to a dedicated management VLAN reachable only from hardened jump hosts, and enforce short-lived credentials with multifactor at the jump host. Remove any exposure of the management interface to general IT subnets. Audit existing sessions and rotate all FortiNDR administrative credentials on the assumption that a foothold may already exist.

Virtual patch approach: deploy a Suricata rule concept on the path fronting the management interface that inspects HTTP request bodies and parameters for SQL metacharacter sequences and stacked query syntax such as single quotes followed by boolean tautologies, UNION SELECT patterns, and comment terminators targeting the FortiNDR API endpoints. Alert and drop on matches rather than passing them to the appliance. Pair this with strict allow-listing of source addresses permitted to reach the interface. This narrows the injection surface while patch validation proceeds in a maintenance window rather than under production pressure.

BreachSpider Intel

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