CVE-2026-65129 in Infrastructure Controller
Summary
by MITRE • 09/22/2026
NVIDIA Infrastructure Controller for Linux contains a vulnerability where an attacker could cause improper certificate validation. A successful exploit of this vulnerability might lead to information disclosure, data tampering, and denial of service.
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Analysis
by VulDB Data Team • 09/22/2026
The NVIDIA Infrastructure Controller for Linux represents a critical component in modern high-performance computing and artificial intelligence clusters, serving as the management plane that orchestrates hardware resources, monitors system health, and facilitates secure communication between nodes. Within this architecture, the controller relies heavily on Transport Layer Security protocols to ensure confidentiality, integrity, and authenticity of data exchanged with connected devices and management interfaces. The identified vulnerability centers on a fundamental flaw in the certificate validation logic implemented within the software stack responsible for establishing these encrypted connections. This defect allows an attacker who has network access to the affected system to bypass standard cryptographic verification procedures that are designed to prevent man-in-the-middle attacks and impersonation attempts.
At a technical level, improper certificate validation typically involves failures such as accepting self-signed certificates without explicit administrator approval, ignoring hostname mismatches in server certificates, or disabling strict mode checks for chain of trust verification. In the context of the NVIDIA Infrastructure Controller, this flaw means that during the handshake process required to establish secure sessions, the software may accept a fraudulent or untrusted certificate presented by an intermediary device. This breakdown in cryptographic assurance effectively neutralizes the protective benefits of encryption, as the client cannot reliably verify the identity of the server it is communicating with. An attacker can exploit this weakness by positioning themselves between the management interface and the controller, presenting a maliciously crafted certificate that appears valid to the flawed validation routine but does not correspond to the legitimate NVIDIA infrastructure components.
The operational impact of this vulnerability is severe due to the privileged nature of the Infrastructure Controller's role in cluster management. A successful exploitation enables information disclosure, as sensitive configuration data, hardware telemetry, and potentially user credentials transmitted over the compromised channel can be intercepted by an unauthorized party. Furthermore, the ability to perform data tampering allows attackers to modify critical system parameters or firmware update instructions without detection, which could lead to persistent backdoors or degraded performance characteristics within the cluster. The risk extends to denial of service scenarios where an attacker might disrupt legitimate management operations by injecting malformed certificates that cause connection failures or force repeated authentication retries, thereby exhausting system resources and rendering the infrastructure controller unavailable for essential administrative tasks.
This vulnerability aligns with CWE-295 Improper Certificate Validation, which describes weaknesses in how software handles digital certificate verification processes. From a threat modeling perspective consistent with MITRE ATT&CK frameworks, this flaw facilitates techniques associated with Man-in-the-Middle attacks and Credential Access through interception of unverified secure channels. The exploitation vector generally requires network proximity to the management interface, suggesting that while it may not be remotely exploitable over the public internet if proper perimeter defenses are in place, it poses a significant risk within internal networks where lateral movement or physical access might allow an adversary to intercept traffic destined for the controller.
Mitigation strategies must prioritize immediate patching of the NVIDIA Infrastructure Controller software to versions that enforce strict certificate validation policies as per industry best practices. Administrators should ensure that all certificates used in their infrastructure are issued by a trusted internal Certificate Authority and properly configured with correct hostnames and expiration dates. Additionally, implementing network segmentation to isolate management traffic from general user or production networks can reduce the attack surface available for interception attempts. Security teams should also monitor for anomalous connection patterns indicative of certificate validation bypasses and consider deploying intrusion detection systems capable of identifying SSL/TLS anomalies associated with man-in-the-middle activities until the underlying software vulnerability is fully remediated.