CVE-2026-95773 in Fabric Composer
Summary
by MITRE • 11/03/2026
A denial-of-service vulnerability has been identified in HPE Networking Fabric Composer. Successful exploitation of this vulnerability could allow a low-privileged local attacker to cause a partial denial-of-service condition affecting other workloads on the same host.
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Analysis
by VulDB Data Team • 11/03/2026
The disclosed security issue represents a significant reliability concern within the HPE Networking Fabric Composer environment, specifically categorized as a denial-of-service vulnerability that stems from insufficient resource management or input validation mechanisms. This flaw allows an attacker with low-privileged local access to trigger conditions that degrade system performance or cause partial service outages for other workloads residing on the same host infrastructure. The core technical deficiency lies in the application's failure to properly isolate resources or enforce strict limits when processing requests from untrusted local users, thereby enabling a single compromised account to consume disproportionate amounts of CPU, memory, or I/O bandwidth, which directly impacts the stability and availability of co-located services.
From an operational perspective, this vulnerability undermines the principle of multi-tenant isolation within virtualized or containerized environments where Fabric Composer manages network configurations. A successful exploitation does not necessarily lead to data exfiltration or remote code execution but rather results in a partial denial-of-service condition that can disrupt critical networking functions such as topology discovery, policy enforcement, or connectivity management for other tenants on the same physical host. This degradation of service availability poses a direct risk to business continuity and SLA compliance, particularly in enterprise environments where network orchestration tools are central to infrastructure automation and stability.
The vulnerability aligns with CWE-400, which describes Uncontrolled Resource Consumption, as it involves an entity consuming more resources than intended without proper bounds or limits. Furthermore, from a threat modeling standpoint consistent with the MITRE ATT&CK framework, this behavior maps to techniques associated with resource exhaustion attacks, where adversaries aim to degrade service availability rather than compromise confidentiality or integrity. The attack vector is local and requires low privileges, indicating that an attacker must first gain foothold on the host through other means such as weak authentication, misconfigured access controls, or exploitation of a separate vulnerability in another application running on the same system.
To mitigate this risk, administrators should implement strict resource quotas and limits using operating-level tools like cgroups for Linux-based deployments to ensure that no single process can monopolize host resources regardless of its privilege level. Additionally, deploying Fabric Composer within isolated virtual machines or containers with dedicated hardware resources rather than shared hosts reduces the blast radius of such attacks. Regular patching according to vendor advisories is essential as updates typically include code changes that enforce stricter resource accounting and validation checks. Security teams should also monitor for anomalous spikes in CPU or memory usage by local processes, which may indicate active exploitation attempts against this flaw.