CVE-2026-95768 in Fabric Composer
Summary
by MITRE • 11/03/2026
A privilege escalation vulnerability exists in the API of HPE Networking Fabric Composer if certain preconditions outside of the attacker's control are met. Successful exploitation could allow an authenticated low-privileged remote attacker to obtain sensitive information from the affected system.
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Analysis
by VulDB Data Team • 11/03/2026
The identified security flaw resides within the application programming interface of Hewlett Packard Enterprise Networking Fabric Composer, representing a critical weakness in access control mechanisms that governs how user privileges are validated and enforced during API interactions. This vulnerability is classified as an authorization bypass or improper privilege escalation, where the system fails to correctly verify whether an authenticated user possesses the necessary permissions for specific administrative actions. The core technical flaw involves insufficient checks on the identity and role of the requesting entity when processing certain API requests. While the attacker must be authenticated to initiate the exploit, the application logic erroneously grants elevated access rights or sensitive data visibility based on flawed state management or missing validation steps within the request handling pipeline. This architectural deficiency allows a user with low-level privileges to interact with endpoints intended for high-privileged administrators, effectively bypassing the intended security boundaries of the system.
The operational impact of this vulnerability is significant due to its potential to compromise the integrity and confidentiality of network infrastructure management data. By exploiting this flaw, an authenticated attacker can retrieve sensitive information that should be restricted to authorized personnel only. This may include configuration details, topology maps, user credentials, or other critical metadata essential for managing the fabric environment. The exposure of such data facilitates further reconnaissance activities, allowing adversaries to map out the network architecture and identify additional targets for exploitation. Furthermore, if the API allows modification rather than just retrieval, this could lead to unauthorized changes in network configurations, potentially disrupting service availability or altering security policies. The severity is compounded by the fact that it requires only authentication, which may be obtained through phishing, credential theft, or other common attack vectors, making it a viable path for lateral movement within an enterprise environment.
From a threat modeling perspective, this vulnerability aligns with CWE-269 Improper Privilege Escalation and CWE-862 Missing Authorization in the Common Weakness Enumeration database. In terms of adversary behavior, it corresponds to techniques found in the MITRE ATT&CK framework such as T1078 Valid Accounts for initial access or persistence, followed by T1530 Data from Cloud Storage if sensitive data is exfiltrated, or T1485 Network Service Discovery if used to map internal services. The requirement of preconditions outside the attacker's control suggests that specific system states or configurations must be present, which may limit the attack surface but does not eliminate the risk for targeted attacks against systems meeting those criteria.
Mitigation strategies should prioritize immediate patching using vendor-provided updates that address the authorization logic flaws in the API layer. In addition to software remediation, organizations should implement strict network segmentation to isolate management interfaces from general user networks, ensuring that only authorized administrative workstations can access the Fabric Composer APIs. Enforcing multi-factor authentication for all administrative accounts adds a critical layer of defense against credential-based attacks. Furthermore, deploying web application firewalls with rules specifically tuned to detect anomalous API usage patterns related to privilege escalation attempts can provide an additional defensive barrier. Regular auditing of user permissions and adherence to the principle of least privilege are essential operational practices to minimize the impact if such vulnerabilities exist within the environment.