CVE-2025-15340 Overview
CVE-2025-15340 is an incorrect default permissions vulnerability (CWE-276) affecting Tanium Comply. This security flaw arises from improper permission configurations that could allow privileged attackers to access or modify sensitive data within the Comply module. The vulnerability is exploitable over the network and requires high privileges to exploit, but once exploited could result in significant confidentiality and integrity impacts.
Critical Impact
Attackers with elevated privileges can exploit incorrect default permissions to gain unauthorized access to sensitive compliance data and potentially modify system configurations.
Affected Products
- Tanium Comply (specific versions not disclosed)
Discovery Timeline
- 2026-02-05 - CVE CVE-2025-15340 published to NVD
- 2026-02-05 - Last updated in NVD database
Technical Details for CVE-2025-15340
Vulnerability Analysis
This vulnerability stems from incorrect default permissions (CWE-276) in Tanium Comply. The flaw allows authenticated attackers with high privileges to exploit misconfigured permission settings within the Comply module. While exploitation requires administrative access, the impact is significant—successful attacks can compromise both confidentiality and integrity of the affected system without causing service disruption.
The network-accessible nature of this vulnerability means that remote authenticated administrators could potentially abuse their access to gain unauthorized access to sensitive compliance data or modify protected configurations that should be restricted even from high-privileged users.
Root Cause
The root cause of CVE-2025-15340 lies in incorrect default permission configurations within Tanium Comply. When deployed with factory settings, certain resources or functionality lack proper access restrictions, creating an overly permissive environment. This misconfiguration violates the principle of least privilege, allowing users with elevated access to perform actions beyond their intended authorization scope.
Attack Vector
The attack vector for this vulnerability is network-based, requiring an attacker to have authenticated access with high privileges (such as administrative credentials) to the Tanium Comply environment. The attack complexity is low once these prerequisites are met—no user interaction is required, and the attacker can directly exploit the permission misconfiguration to access or modify sensitive data.
An attacker would typically leverage existing administrative access to identify resources with overly permissive configurations, then exploit these misconfigurations to read sensitive compliance information or alter protected settings. The scope remains unchanged, meaning the vulnerability's impact is confined to the Tanium Comply component itself rather than extending to other system resources.
Detection Methods for CVE-2025-15340
Indicators of Compromise
- Unexpected access to compliance data by administrator accounts outside normal operational hours
- Unauthorized modifications to Comply module configurations or permission settings
- Anomalous administrative activity patterns within the Tanium console
Detection Strategies
- Monitor Tanium Comply audit logs for unusual administrative actions, particularly those involving permission changes or sensitive data access
- Implement behavioral analytics to detect deviation from normal administrator activity baselines
- Review access control configurations periodically to identify overly permissive default settings
Monitoring Recommendations
- Enable comprehensive logging for all administrative actions within Tanium Comply
- Configure alerts for permission modification events and sensitive data access attempts
- Integrate Tanium logs with your SIEM solution for centralized monitoring and correlation
How to Mitigate CVE-2025-15340
Immediate Actions Required
- Review and remediate default permission configurations in Tanium Comply following Tanium's security guidance
- Audit current administrator access levels and remove unnecessary privileges
- Apply the security patch provided by Tanium as referenced in their security advisory
Patch Information
Tanium has addressed this vulnerability and released security guidance. Organizations should consult the Tanium Security Advisory TAN-2025-029 for detailed patch information and remediation instructions. Apply the recommended updates to Tanium Comply as soon as possible to address this incorrect default permissions issue.
Workarounds
- Review and harden default permission settings within Tanium Comply to follow least-privilege principles
- Implement additional access controls and monitoring for administrative accounts
- Restrict network access to the Tanium management interface to trusted administrative networks only
- Consider implementing role-based access control (RBAC) policies to limit administrative capabilities to only what is necessary for each administrator role
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
