CVE-2026-76697 in EdgeConnect SD-WAN Gateways
Summary
by MITRE • 09/15/2026
A vulnerability in the web-based management interface of HPE Networking EdgeConnect SD-WAN Gateways could allow a remote attacker authenticated with low privileges to access sensitive information. A successful exploit allows 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 vulnerability identified in the web-based management interface of HPE Networking EdgeConnect SD-WAN Gateways represents a significant security flaw that undermines the confidentiality and integrity of enterprise network infrastructure. This specific weakness allows an attacker who has already obtained low-privileged authentication credentials to access sensitive information stored within or managed by the gateway device. The existence of this vulnerability highlights a critical gap in role-based access control mechanisms, where permissions assigned to lower-level administrative accounts are not sufficiently restricted from accessing high-sensitivity data fields that should be reserved for higher-privilege roles such as system administrators or security officers.
From a technical perspective, the flaw likely stems from improper authorization checks within the application logic of the web management interface. When an authenticated user with low privileges requests specific API endpoints or navigates to certain configuration pages, the server fails to validate whether that specific role is authorized for the requested action. This lack of vertical privilege escalation prevention enables the retrieval of sensitive data such as cryptographic keys, network topology details, peer gateway configurations, and potentially other credentials required to interact with underlying services. The absence of strict object-level access control allows the attacker to bypass intended security boundaries simply by manipulating HTTP requests or navigating directly to protected URLs that are not properly gated behind appropriate permission checks.
The operational impact of this vulnerability is severe due to its potential for lateral movement within a network environment. By retrieving sensitive information, an authenticated low-privilege user can gather intelligence necessary to launch further attacks against the SD-WAN infrastructure and connected services. This could include extracting configuration files that reveal internal IP addresses, routing policies, or tunnel endpoints, which are critical for understanding the network architecture. Furthermore, access to cryptographic materials or session tokens could allow the attacker to impersonate legitimate users, decrypt secure communications, or manipulate traffic flows. In a software-defined wide area networking context, compromising these gateways can lead to service disruption, data interception across multiple sites, and complete loss of control over the enterprise's WAN fabric.
This vulnerability aligns with Common Weakness Enumeration (CWE) category CWE-269, which describes Improper Privilege Assignment, specifically where a user is granted privileges that exceed their intended role or level within the system hierarchy. Additionally, it relates to CWE-862, Missing Authorization, as the application fails to enforce access controls on resources accessed by authenticated users. In terms of offensive security frameworks, this behavior corresponds to MITRE ATT&CK technique T1078, Valid Accounts, where attackers leverage legitimate credentials with insufficient restrictions to move laterally and gather information for subsequent exploitation phases such as credential dumping or configuration manipulation.
To mitigate the risks associated with this vulnerability, organizations must prioritize immediate patching of HPE Networking EdgeConnect SD-WAN Gateways to versions that include fixes for these authorization flaws. In addition to applying vendor-provided updates, administrators should enforce strict least-privilege principles by auditing user roles and ensuring that low-level accounts do not have access to sensitive configuration or diagnostic interfaces. Implementing multi-factor authentication for all administrative access adds an additional layer of security, reducing the likelihood of credential compromise leading to exploitation. Network segmentation strategies should also be reviewed to ensure that management planes are isolated from data planes, limiting the blast radius if a gateway is compromised. Regular vulnerability scanning and penetration testing focused on web application logic can help identify similar authorization gaps before they are exploited by malicious actors.