CVE-2026-116668 in Discover
Summary
by MITRE • 11/04/2026
Tanium addressed an uncontrolled resource consumption vulnerability in Discover.
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Analysis
by VulDB Data Team • 11/04/2026
The disclosed vulnerability represents a classic instance of uncontrolled resource consumption within the Tanium Discover component, a critical module responsible for inventory management and asset discovery across enterprise environments. This flaw stems from insufficient validation or rate-limiting mechanisms when processing incoming requests or data payloads designed to enumerate system assets. In many such implementations, attackers can exploit this weakness by sending specially crafted network packets that trigger excessive memory allocation, CPU cycles, or thread creation without corresponding limits on duration or volume. The underlying technical deficiency typically involves a lack of proper input sanitization or the absence of robust quota enforcement for specific API endpoints or discovery protocols used by Tanium agents and servers to communicate status information.
From an operational perspective, this vulnerability poses a significant risk to service availability rather than data integrity or confidentiality in its immediate manifestation. By exploiting the uncontrolled resource consumption, a malicious actor can induce a denial-of-service condition that degrades system performance or causes complete application crashes within the Tanium infrastructure. This disruption impacts the organization's ability to monitor endpoint health, deploy security patches, and maintain visibility into their IT estate. Since Discover is often central to asset management strategies, an outage during such an attack could leave security teams blind to new devices joining the network or changes in existing configurations, thereby widening the window of opportunity for further malicious activities that go undetected due to the loss of monitoring capabilities.
The vulnerability aligns closely with Common Weakness Enumeration identifier CWE-400, which describes conditions where a software process consumes resources without proper bounds checking, leading to resource exhaustion. In terms of offensive security frameworks, this exploitation technique maps directly to MITRE ATT&CK tactic T1496, known as Resource Hijacking or Denial of Service via resource consumption. Attackers leverage such flaws not necessarily for data theft but to disrupt business continuity and create chaos that may serve as a distraction for more intrusive attacks elsewhere in the network perimeter. The impact is particularly severe in large-scale deployments where Tanium manages thousands of endpoints, as the cascading effects of server unavailability can ripple through dependent security operations center workflows and incident response procedures.
Mitigation strategies primarily involve applying the vendor-provided patches that address the specific logic flaws within the Discover module's request handling routines. Organizations should ensure their Tanium platforms are updated to versions where resource limits have been enforced, such as implementing stricter rate limiting on discovery queries and optimizing memory management for high-volume data processing tasks. Additionally, network-level defenses can be employed to mitigate immediate risks; this includes configuring firewalls or intrusion prevention systems to detect and block anomalous traffic patterns indicative of resource exhaustion attacks against the Tanium infrastructure. Regular auditing of system resources during peak usage periods helps in establishing baseline metrics that make it easier to identify deviations caused by such vulnerabilities before they result in full service outages.