CVE-2026-76727 in Instant ON
Summary
by MITRE • 09/29/2026
Command injection vulnerabilities exist in the affected interface of HPE Networking Instant ON that could allow an authenticated remote attacker with high privileges to perform command injection. Successful exploitation could allow an attacker to execute arbitrary commands as a privileged user on the underlying operating system.
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Analysis
by VulDB Data Team • 09/29/2026
The vulnerability identified within the HPE Networking Instant ON management interface represents a critical security flaw classified under CWE-78, commonly known as OS Command Injection. This specific weakness arises from the improper neutralization of special elements used in an operating system command, which allows attackers to inject and execute arbitrary commands. The affected component is part of the administrative web or API interface that handles configuration and management tasks for network devices. While the vulnerability requires authentication and high-privilege access levels on the target device, its existence significantly lowers the barrier for exploitation compared to unauthenticated attacks, yet it remains a severe risk due to the potential impact on system integrity.
From an operational perspective, this flaw enables an authenticated attacker with administrative privileges to bypass intended security controls by injecting malicious shell commands into input fields or parameters that are passed directly to the underlying operating system without adequate sanitization. The primary technical consequence is the ability for the attacker to execute arbitrary code with the same elevated permissions as the vulnerable application process. This typically means running commands as root, administrator, or a similarly privileged service account on the host device's operating system. Such access grants the adversary complete control over the affected network infrastructure component, allowing them to modify configurations, install backdoors, exfiltrate sensitive data, or pivot further into the internal network.
The exploitation of this vulnerability aligns with several techniques in the MITRE ATT&CK framework, particularly T1059 Command and Scripting Interpreter for executing commands via shell access, and potentially T1078 Valid Accounts if the attacker leverages stolen credentials to gain the required high-privilege status. The presence of such a flaw indicates insufficient input validation or unsafe use of system calls within the application code. Attackers can manipulate parameters that are not properly escaped before being concatenated into command strings, leading to unintended execution paths controlled by the user rather than the intended logic of the software.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. The most effective solution is for HPE to release a patched version of the Instant ON firmware or management software that addresses this specific input validation failure. Administrators should apply these updates immediately upon availability. In the interim, if patching is not feasible, access to the affected interface should be strictly limited to trusted IP ranges using network segmentation and firewall rules. Additionally, enforcing multi-factor authentication for administrative accounts can reduce the risk of credential theft leading to exploitation. Code review practices should also emphasize strict input validation, output encoding, and the use of safe APIs that do not invoke shell interpreters directly when processing user-supplied data.