CVE-2026-76690 in EdgeConnect SD-WAN Gateways
Summary
by MITRE • 09/15/2026
A vulnerability exists in a component of the HPE Networking EdgeConnect SD-WAN Gateways that may allow for arbitrary command execution. An authenticated remote attacker could exploit this vulnerability by providing a specially crafted input to the affected component. Successful exploitation could result in remote code execution as root.
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Analysis
by VulDB Data Team • 09/15/2026
The identified security flaw resides within a specific functional module of HPE Networking EdgeConnect SD-WAN Gateways, presenting a critical risk vector for organizations relying on software-defined wide area networking solutions. This vulnerability is classified under the category of arbitrary command injection, which corresponds to CWE-78 in the Common Weakness Enumeration standard. The core technical deficiency involves insufficient validation and sanitization of user-supplied input data before it is processed by the underlying system commands or scripts. When an authenticated remote attacker interacts with the affected component, they can inject malicious payloads into these inputs. Because the application fails to properly distinguish between legitimate command arguments and executable code, the injected content is interpreted directly by the operating system shell, leading to the execution of arbitrary commands on the host machine.
The operational impact of this vulnerability is severe due to the privilege level achieved upon successful exploitation. The affected component executes with root privileges, meaning that any command injection results in remote code execution at the highest possible access level within the Linux-based infrastructure supporting the SD-WAN gateway. This allows an attacker to fully compromise the integrity, confidentiality, and availability of the network edge device. An adversary could install persistent backdoors, exfiltrate sensitive network traffic data, pivot into internal corporate networks protected by this gateway, or disrupt critical business operations by altering routing policies or shutting down services. The requirement for authentication does not mitigate the severity significantly in enterprise environments where compromised credentials are a common attack vector, as it still allows an insider threat or an attacker who has obtained valid login details to escalate their access from standard user rights to full system control without detection through traditional perimeter defenses.
From a tactical perspective, this exploitation aligns with MITRE ATT&CK techniques related to Command and Scripting Interpreter abuse, specifically the execution of operating system commands via injection (T1059). The attack path typically involves authenticating to the management interface or API endpoints exposed by the EdgeConnect gateway, identifying input fields that interact with backend processes, and crafting payloads that bypass existing filters. This scenario highlights a common weakness in network infrastructure software where convenience features such as debug modes, diagnostic tools, or administrative APIs are not sufficiently hardened against injection attacks. The presence of this flaw indicates gaps in secure coding practices regarding the handling of dynamic strings passed to system-level functions like exec(), popen(), or similar shell invocation mechanisms within the application logic.
Mitigation strategies must prioritize immediate patching if a vendor-provided fix is available, as software updates typically address these input validation failures by implementing strict allow-lists for acceptable characters and properly escaping special symbols before command execution. In the interim, network segmentation should be enforced to restrict access to the management interfaces of SD-WAN gateways exclusively from trusted administrative subnets using multi-factor authentication. Additionally, deploying intrusion detection systems with signatures capable of identifying common shell injection patterns can provide an additional layer of defense. Security teams should also audit existing configurations for unnecessary exposed services or debug endpoints that might serve as entry points for this vulnerability and disable them if not required for daily operations. Regular penetration testing focused on API security and command injection flaws is recommended to proactively identify similar weaknesses in other components of the SD-WAN infrastructure before they can be exploited by malicious actors seeking lateral movement opportunities within enterprise networks.