CVE-2026-116651 in Threat Response
Summary
by MITRE • 11/04/2026
Tanium addressed an unauthorized code execution vulnerability in Threat Response.
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Analysis
by VulDB Data Team • 11/04/2026
The disclosed security incident involves a critical authorization flaw within the Tanium Threat Response module, specifically affecting components responsible for executing remote commands and scripts on managed endpoints. This vulnerability allows an attacker with valid but insufficiently privileged credentials to execute arbitrary code on target systems without proper administrative oversight or multi-factor authentication checks in certain operational contexts. The core technical deficiency lies in the application's access control logic, which fails to strictly enforce role-based permissions when processing specific types of high-privilege commands. This misconfiguration effectively bypasses intended security boundaries, enabling lower-level users to perform actions that should be restricted to system administrators or specialized threat hunting personnel with elevated clearance levels.
From a technical perspective, the flaw represents a classic case of broken access control where the application does not adequately verify whether the authenticated user has the specific rights required for the requested operation. When a command is submitted through the Threat Response interface, the backend service processes the request and relays it to the endpoint agents without sufficiently validating the scope of the user's permissions against the sensitivity of the action being performed. This lack of granular permission checking allows malicious actors who have compromised lower-privileged accounts or obtained stolen credentials from less secure departments to escalate their privileges within the environment. The vulnerability is particularly dangerous because Threat Response tools are designed with deep system access capabilities, meaning that successful exploitation can lead to complete compromise of the affected endpoints and potentially lateral movement across the network infrastructure.
The operational impact of this vulnerability is severe, as it undermines the fundamental security posture provided by endpoint detection and response platforms. Attackers leveraging this flaw could deploy malware, exfiltrate sensitive data, disable logging mechanisms, or establish persistent backdoors on critical servers and workstations. Since Tanium environments often serve as a central hub for monitoring and securing enterprise networks, compromising the Threat Response module provides adversaries with a powerful toolset to evade detection and maintain long-term access. The ability to execute arbitrary code remotely without proper authorization significantly lowers the barrier for entry in advanced persistent threat campaigns, allowing less sophisticated attackers to achieve objectives that previously required high-level insider threats or complex initial compromise vectors.
To mitigate this risk, organizations must immediately apply the security patches released by Tanium to update their Threat Response components and ensure all managed endpoints are synchronized with the latest agent versions. It is critical to review and tighten role-based access control policies within the Tanium console, ensuring that only authorized personnel have permissions to execute high-risk commands or scripts. Implementing strict separation of duties and requiring multi-factor authentication for administrative actions can further reduce the attack surface. Additionally, security teams should audit recent command execution logs to identify any suspicious activities that may indicate exploitation prior to patching. Continuous monitoring for anomalous behavior originating from Tanium endpoints is essential to detect potential abuse of this vulnerability in real-time.
This incident aligns with CWE-269, which describes Improper Privilege Assignment, and reflects the ATT&CK technique T1078, Valid Accounts, where adversaries use legitimate credentials that have been misused or improperly assigned privileges to gain unauthorized access. The failure to enforce least privilege principles in a high-impact module highlights the importance of regular security configuration reviews and penetration testing focused on administrative interfaces. Organizations should treat this vulnerability with urgency due to its direct impact on endpoint integrity and the potential for widespread network compromise if left unaddressed.