CVE-2016-9222 in NetFlow Generation Appliance
Summary
by MITRE
A vulnerability in the web-based management interface of Cisco NetFlow Generation Appliance could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. More Information: CSCvb15229. Known Affected Releases: 1.0(2).
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Analysis
by VulDB Data Team • 05/14/2026
The vulnerability identified as CVE-2016-9222 affects the web-based management interface of Cisco NetFlow Generation Appliance version 1.0(2), representing a critical security flaw that enables unauthenticated remote attackers to execute cross-site scripting attacks. This vulnerability resides within the device's web interface, which serves as the primary administrative access point for configuring and managing network flow data collection and reporting capabilities. The affected appliance is commonly deployed in enterprise network environments where it aggregates and processes network traffic data for monitoring, billing, and security analysis purposes, making it a valuable target for malicious actors seeking to compromise network infrastructure.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the web interface components responsible for processing user-supplied data. When an attacker crafts malicious input and submits it through the management interface, the application fails to properly sanitize or escape the data before rendering it in the browser context. This allows malicious JavaScript code to be injected and executed within the victim's browser session, potentially enabling session hijacking, data exfiltration, or further exploitation of the compromised system. The vulnerability specifically affects the web-based management interface, which typically operates on standard HTTP or HTTPS ports, making it accessible to anyone who can reach the device's network address without requiring authentication credentials.
The operational impact of this vulnerability extends beyond simple script execution, as it creates a persistent threat vector that can be exploited by attackers without requiring legitimate access credentials. An attacker could potentially use this vulnerability to steal administrative sessions, modify configuration settings, or gain unauthorized access to sensitive network flow data. The implications are particularly severe for network security operations, as the compromised appliance could provide attackers with visibility into network traffic patterns, potentially enabling more sophisticated attacks against the broader network infrastructure. This vulnerability directly impacts the integrity and confidentiality of network monitoring data, undermining the security posture of organizations that rely on the appliance for network traffic analysis and threat detection.
Organizations affected by this vulnerability should implement immediate mitigations including applying the vendor-provided security patches, restricting network access to the appliance through firewall rules, and implementing network segmentation to limit exposure. The vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and represents a common attack pattern that maps to ATT&CK technique T1059.3.001 for script execution. Network administrators should also consider implementing web application firewalls, monitoring for suspicious input patterns, and conducting regular security assessments of management interfaces. The affected release version 1.0(2) indicates that this vulnerability existed in a relatively early release, highlighting the importance of maintaining up-to-date security patches and implementing robust vulnerability management processes. Additionally, organizations should review their network access controls and ensure that management interfaces are not directly exposed to untrusted networks, as this vulnerability demonstrates the critical need for proper network segmentation and access control policies.