CVE-2025-15343: Tanium Enforce Auth Bypass Vulnerability

CVE-2025-15343 Overview

CVE-2025-15343 is an incorrect default permissions vulnerability identified in Tanium Enforce. This security flaw relates to CWE-276 (Incorrect Default Permissions), where software installations or configurations set improper permission levels that could allow unauthorized access to sensitive resources or functionality.

Tanium Enforce is an endpoint management solution used by organizations to enforce security policies across enterprise environments. A permissions misconfiguration in this product could potentially allow authenticated attackers with high privileges to access or modify sensitive data that should be restricted.

Critical Impact

Authenticated attackers with elevated privileges could exploit this vulnerability via network access to compromise the confidentiality and integrity of sensitive data managed by Tanium Enforce.

Affected Products

• Tanium Enforce (specific versions referenced in Tanium Security Advisory TAN-2025-032)

Discovery Timeline

• February 5, 2026 - CVE-2025-15343 published to NVD
• February 5, 2026 - Last updated in NVD database

Technical Details for CVE-2025-15343

Vulnerability Analysis

This vulnerability stems from incorrect default permissions (CWE-276) within Tanium Enforce. The attack vector is network-based, meaning exploitation can occur remotely without physical access to the target system. However, successful exploitation requires high-level privileges, which limits the pool of potential attackers to those who have already obtained elevated access within the environment.

The vulnerability impacts both confidentiality and integrity at a high level, meaning attackers could both read sensitive information and potentially modify data or configurations. Notably, availability is not affected, indicating the vulnerability does not enable denial of service attacks.

Root Cause

The root cause of this vulnerability is improper permission assignment during the installation or configuration of Tanium Enforce. When software sets default permissions that are too permissive, it creates an opportunity for users or processes with some level of access to exceed their intended authorization boundaries. In the context of Tanium Enforce, this could mean that authenticated administrators or service accounts can access resources or perform actions beyond their designated scope.

Attack Vector

Exploitation of CVE-2025-15343 requires network access to the vulnerable Tanium Enforce deployment along with high-level privileges. An attacker who has already compromised an administrative account or obtained elevated credentials could leverage the misconfigured permissions to:

1. Access sensitive security policy configurations
2. View or extract confidential endpoint management data
3. Modify enforcement rules or security policies
4. Potentially pivot to compromise managed endpoints through policy manipulation

The network-accessible nature of this vulnerability means that remote exploitation is possible once the privilege requirements are met. Organizations should review their Tanium Enforce deployments and consult the official security advisory for specific affected versions and remediation guidance.

Detection Methods for CVE-2025-15343

Indicators of Compromise

• Unexpected access patterns to Tanium Enforce administrative interfaces from unusual accounts
• Modification of security policies or configurations by users outside normal change windows
• Audit log entries showing access to restricted resources by accounts that should not have such permissions
• Changes to enforcement rules or endpoint configurations without corresponding change management tickets

Detection Strategies

• Monitor Tanium Enforce audit logs for unauthorized access attempts or privilege escalation patterns
• Implement alerting on configuration changes to security policies outside of approved maintenance windows
• Review user access reports to identify accounts with permissions exceeding their operational requirements
• Deploy SentinelOne Singularity Platform to detect suspicious endpoint behavior resulting from policy tampering

Monitoring Recommendations

• Enable comprehensive logging for all Tanium Enforce administrative actions
• Configure SIEM integration to correlate Tanium events with other security telemetry
• Establish baseline normal behavior for privileged accounts accessing Tanium Enforce
• Regularly audit permission assignments against the principle of least privilege

How to Mitigate CVE-2025-15343

Immediate Actions Required

• Review the Tanium Security Advisory TAN-2025-032 for specific remediation steps
• Audit current permission assignments in Tanium Enforce deployments
• Restrict administrative access to the minimum necessary personnel
• Enable additional logging and monitoring for privileged account activity

Patch Information

Tanium has addressed this vulnerability as documented in their Security Advisory TAN-2025-032. Organizations should consult this advisory for specific patch information, affected version numbers, and upgrade instructions. Apply the recommended patches or updates as soon as possible following your organization's change management procedures.

Workarounds

• Implement strict network segmentation to limit access to Tanium Enforce management interfaces
• Review and harden default permission configurations according to security best practices
• Apply the principle of least privilege to all accounts with access to Tanium Enforce
• Consider implementing additional authentication controls such as multi-factor authentication for administrative access
• Monitor for any unauthorized changes while awaiting full patch deployment

# Review current Tanium Enforce permissions and access configurations
# Consult Tanium documentation for specific commands applicable to your deployment
# Ensure all administrative access is logged and monitored