CVE-2026-116667 in Discover
Summary
by MITRE • 11/04/2026
Tanium addressed an improper access controls vulnerability in Discover.
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Analysis
by VulDB Data Team • 11/04/2026
The discovery of an improper access control vulnerability within the Tanium platform highlights critical challenges in maintaining robust security postures for enterprise endpoint management and visibility solutions. Such vulnerabilities typically arise when the application fails to properly enforce restrictions on which users or processes can perform specific actions or access certain data resources. In the context of a comprehensive security tool like Tanium Discover, this flaw could potentially allow an authenticated user with lower privileges to escalate their rights or access sensitive information intended for administrators or higher-level roles. This type of misconfiguration undermines the fundamental principle of least privilege, which dictates that users should only have the minimum levels of access necessary to perform their job functions.
From a technical perspective, improper access controls often stem from insufficient authorization checks on server-side endpoints or APIs. An attacker exploiting this vulnerability might manipulate request parameters, such as changing user identifiers in API calls, to bypass intended security boundaries. This could lead to unauthorized viewing of system inventory data, configuration settings, or even the execution of commands on managed endpoints if the privilege escalation is severe enough. The impact extends beyond simple data leakage; it compromises the integrity and confidentiality of the entire endpoint management infrastructure, potentially allowing an attacker to pivot through the network using trusted administrative channels established by the Tanium agent deployments.
This vulnerability aligns closely with CWE-269, which classifies Improper Privilege Assignment, as well as CWE-862, Missing Authorization. In terms of offensive security frameworks, this flaw facilitates techniques categorized under MITRE ATT&CK T1078, Valid Accounts, where an attacker uses legitimate credentials to gain access and then escalates privileges to maintain persistence or expand their reach within the environment. The exploitation of such a vulnerability does not require complex binary exploits or memory corruption techniques; rather, it relies on logical flaws in how the application validates user permissions against requested actions, making it particularly dangerous as it can be automated easily by threat actors scanning for misconfigurations.
Mitigation strategies primarily involve ensuring that Tanium has applied all available security patches and updates released to address this specific issue. Administrators should verify their current version of the Discover component and update accordingly. Beyond patching, organizations must review their internal access control policies to ensure they align with industry best practices for role-based access control (RBAC). This includes regularly auditing user permissions, removing unnecessary privileges from inactive accounts, and enforcing multi-factor authentication for administrative interfaces. Continuous monitoring of audit logs for anomalous privilege escalation attempts can also help detect exploitation activities early, providing an additional layer of defense in depth while technical remediation is implemented.