CVE-2026-65121 in Infrastructure Controller
Summary
by MITRE • 09/22/2026
NVIDIA Infrastructure Controller for Linux contains a vulnerability where an attacker could cause an improper authentication issue. A successful exploit of this vulnerability might lead to escalation of privileges, information disclosure, and data tampering.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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 interface that orchestrates hardware resources, monitors system health, and facilitates communication between host systems and accelerator devices such as GPUs. This software stack is integral to maintaining the integrity and availability of data center operations, where it handles sensitive configuration parameters and administrative commands. The identified vulnerability within this controller introduces a fundamental flaw in its authentication mechanism, specifically categorized under CWE-287, which denotes Improper Authentication. In secure systems, every request that modifies state or accesses protected resources must be rigorously verified against valid credentials and session tokens to ensure the requester is authorized. However, due to implementation errors or logic gaps within the controller's API handling routines, an attacker can bypass these checks under specific conditions, allowing unauthorized entities to interact with administrative endpoints without providing valid authentication data.
The technical nature of this flaw likely involves a failure to validate security contexts on incoming requests directed at privileged management interfaces. This could manifest as missing token verification in RESTful API calls, weak session validation logic, or the acceptance of default credentials that were not properly rotated during deployment. Because the Infrastructure Controller operates with high-level privileges over the underlying hardware and virtualization layers, this authentication bypass is particularly dangerous. It allows an attacker to execute commands that are normally restricted to system administrators, effectively granting them a foothold within the management plane of the cluster. This aligns with MITRE ATT&CK technique T1078, Valid Accounts, as it enables adversaries to operate under the guise of legitimate administrative processes without detection by standard access control mechanisms.
The operational impact of this vulnerability is severe and multifaceted, primarily centering on the escalation of privileges from an unauthenticated state to full administrative control. Once authenticated improperly, an attacker can manipulate system configurations, potentially disabling security logging or altering network routing rules that isolate compromised nodes. This leads directly to information disclosure, as the controller often exposes detailed hardware inventories, firmware versions, and connected device statuses that reveal architectural weaknesses to potential adversaries. Furthermore, data tampering becomes a significant risk; attackers could corrupt configuration files, inject malicious scripts into job scheduling systems, or alter parameters governing GPU memory allocation and thermal limits. Such actions can lead to service degradation, unauthorized mining of cryptographic assets using stolen compute resources, or even physical damage to hardware through improper power management commands if the controller allows direct manipulation of electrical settings.
Mitigation strategies must focus on immediate remediation and long-term architectural hardening. The primary action is to apply the vendor-provided security patch that addresses the authentication logic flaw in the Infrastructure Controller software. Organizations should verify their current version against NVIDIA’s official advisories and update accordingly before network exposure increases risk. In addition to patching, it is critical to enforce strict access controls by placing the management interface behind a secure bastion host or VPN, ensuring that only authorized IP addresses can reach the controller API. Network segmentation plays a vital role here; the management plane should be isolated from general data traffic planes to limit lateral movement in case of compromise. Furthermore, implementing multi-factor authentication for all administrative access and regularly auditing logs for anomalous login attempts can provide an additional layer of defense against exploitation of this vulnerability while patches are being deployed across large-scale clusters.