CVE-2026-76701 in EdgeConnect SD-WAN Gateways
Summary
by MITRE • 09/15/2026
A vulnerability in the API endpoint of HPE Networking EdgeConnect SD-WAN Gateways could allow an unauthenticated remote attacker to access sensitive information. Successful exploitation could allow an attacker to retrieve information which could be used to potentially gain further access to network services supported by HPE Networking EdgeConnect SD-WAN Gateways.
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Analysis
by VulDB Data Team • 09/15/2026
The identified vulnerability resides within the application programming interface of Hewlett Packard Enterprise Networking EdgeConnect Software-Defined Wide Area Network gateways, presenting a critical risk due to its unauthenticated nature. This flaw allows any remote actor with network connectivity to interact directly with sensitive API endpoints without requiring valid credentials or authentication tokens. In modern software-defined networking architectures, APIs serve as the primary mechanism for configuration management, status monitoring, and control plane operations. When these interfaces lack proper access controls, they effectively expose the internal state of the gateway infrastructure to external observers. The absence of authentication mechanisms at this layer represents a fundamental design oversight that bypasses standard security boundaries intended to protect administrative functions from unauthorized entities.
The technical manifestation of this flaw involves improper authorization checks within the API handler logic. Instead of verifying user identity or permissions before processing requests, the system accepts and executes commands from unverified sources. This allows an attacker to query endpoints designed for internal use only, such as those retrieving configuration files, routing tables, session states, or cryptographic keys used in tunnel establishment. By leveraging these exposed data points, a malicious actor can map the network topology, identify active tunnels, and understand the security policies currently enforced by the gateway. This level of visibility is typically reserved for authorized administrators who manage the SD-WAN fabric, making its exposure to unauthenticated users a severe deviation from expected secure operational behavior.
The operational impact of this vulnerability extends beyond mere information disclosure, as it serves as a significant enabler for subsequent attack vectors. The sensitive data retrieved can be analyzed to identify weaknesses in network segmentation or misconfigured access control lists that protect critical backend services. Attackers may use this intelligence to craft targeted exploits against other components within the SD-WAN ecosystem, such as controllers or edge devices connected through the gateway. Furthermore, knowledge of internal IP addresses and service ports facilitates more effective lateral movement if an attacker gains initial foothold elsewhere in the network. The ability to enumerate configuration details also aids in bypassing security controls by identifying default credentials, outdated software versions, or disabled features that could be exploited for privilege escalation or denial of service attacks against specific services supported by the gateway infrastructure.
From a classification perspective, this vulnerability aligns with CWE-284 Improper Access Control and CWE-200 Exposure of Sensitive Information to an Unauthorized Actor. It is also relevant to MITRE ATT&CK technique T1539 Steal Web Session Cookie if session tokens are exposed, or more broadly T1078 Valid Accounts if the retrieved information aids in credential harvesting for legitimate accounts. The scenario reflects a common pattern in network infrastructure where convenience of access overrides security requirements, leading to critical exposure points that compromise the integrity and confidentiality of the entire SD-WAN deployment.
Mitigation strategies must prioritize immediate remediation through vendor-provided patches or firmware updates that enforce strict authentication on all API endpoints. Administrators should implement network-level controls such as firewall rules to restrict API access exclusively to trusted management subnets, thereby adding a layer of defense in depth even if the application-layer vulnerability persists temporarily. Additionally, enabling audit logging for API requests can help detect unauthorized access attempts and provide forensic evidence during incident response activities. Regular security assessments focusing on external-facing interfaces are essential to ensure that no other endpoints suffer from similar misconfigurations, maintaining the overall resilience of the software-defined wide area network against reconnaissance-based attacks.