CVE-2025-48418: Fortinet FortiManager Privilege Escalation

CVE-2025-48418 Overview

A hidden functionality vulnerability (CWE-912) has been identified in multiple versions of Fortinet FortiAnalyzer, FortiAnalyzer Cloud, FortiManager, and FortiManager Cloud products. This vulnerability allows a remote authenticated read-only administrator with CLI access to escalate their privileges through the use of a hidden command. The vulnerability affects a wide range of product versions across both on-premises and cloud deployments of Fortinet's centralized management and analytics platforms.

Critical Impact

Authenticated read-only administrators can leverage hidden CLI functionality to escalate privileges, potentially gaining unauthorized access to administrative functions and compromising the security management infrastructure.

Affected Products

• Fortinet FortiAnalyzer versions 7.6.0 through 7.6.3, 7.4.0 through 7.4.7, 7.2.0 through 7.2.10, 7.0.0 through 7.0.14, and all 6.4 versions
• Fortinet FortiAnalyzer Cloud versions 7.6.2, 7.4.1 through 7.4.7, 7.2.1 through 7.2.10, 7.0.1 through 7.0.14, and all 6.4 versions
• Fortinet FortiManager versions 7.6.0 through 7.6.3, 7.4.0 through 7.4.7, 7.2.0 through 7.2.10, 7.0.0 through 7.0.14, and all 6.4 versions
• Fortinet FortiManager Cloud versions 7.6.2 through 7.6.3, 7.4.1 through 7.4.7, 7.2.1 through 7.2.10, 7.0.1 through 7.0.14, and all 6.4 versions

Discovery Timeline

• 2026-03-10 - CVE-2025-48418 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2025-48418

Vulnerability Analysis

This vulnerability is classified as CWE-912 (Hidden Functionality), which occurs when software contains undocumented or hidden functionality that can be exploited by attackers. In the context of FortiAnalyzer and FortiManager, the hidden command functionality within the CLI allows users with read-only administrative access to bypass intended access controls and escalate their privileges.

The exploitation requires network access to the affected device's CLI interface and valid credentials for a read-only administrator account. Once authenticated, the attacker can invoke the hidden command to gain elevated privileges, potentially obtaining full administrative control over the security management platform. This is particularly concerning as FortiAnalyzer and FortiManager are central components in Fortinet's security infrastructure, managing configurations and logs for FortiGate firewalls and other security devices.

Root Cause

The root cause of this vulnerability lies in the presence of undocumented hidden commands within the CLI that were not properly restricted based on user privilege levels. The hidden functionality was accessible to read-only administrators despite their restricted role, indicating insufficient access control validation for these undocumented commands.

Attack Vector

The attack is executed over the network by an authenticated user with read-only administrative privileges. The attacker must have valid credentials and access to the CLI interface of the vulnerable FortiAnalyzer or FortiManager system. The attack does not require user interaction and can be executed with low complexity once CLI access is obtained.

The exploitation flow involves:

1. Authenticating to the target FortiAnalyzer or FortiManager CLI as a read-only administrator
2. Executing the hidden command that bypasses privilege restrictions
3. Gaining elevated privileges beyond the intended read-only access level

Technical details regarding the specific hidden command syntax are not publicly disclosed to prevent exploitation. Organizations should consult the Fortinet Security Advisory FG-IR-26-081 for detailed technical information.

Detection Methods for CVE-2025-48418

Indicators of Compromise

• Unexpected privilege changes for read-only administrator accounts in FortiAnalyzer or FortiManager audit logs
• Unusual CLI command execution patterns from read-only admin sessions
• Administrative actions performed by accounts that should have read-only access
• Anomalous configuration changes originating from restricted user accounts

Detection Strategies

• Monitor FortiAnalyzer and FortiManager audit logs for privilege escalation events and unexpected administrative actions
• Implement alerting on CLI sessions from read-only administrators that execute commands outside their expected scope
• Review user activity logs for discrepancies between assigned roles and actual actions performed
• Deploy network traffic analysis to detect unusual management plane activity to FortiAnalyzer/FortiManager interfaces

Monitoring Recommendations

• Enable comprehensive logging on all FortiAnalyzer and FortiManager devices and centralize logs for analysis
• Implement real-time alerting for privilege-related events in the security management infrastructure
• Conduct regular access reviews to identify any unauthorized privilege escalations
• Monitor for new or modified administrator accounts that may indicate post-exploitation activity

How to Mitigate CVE-2025-48418

Immediate Actions Required

• Upgrade affected FortiAnalyzer and FortiManager installations to patched versions as specified in the Fortinet security advisory
• Review and audit all read-only administrator accounts for any signs of misuse or privilege escalation
• Restrict CLI access to FortiAnalyzer and FortiManager to only essential personnel and trusted networks
• Implement network segmentation to limit exposure of management interfaces

Patch Information

Fortinet has released security patches addressing this vulnerability. Organizations should apply the appropriate updates based on their deployed product versions. Detailed patch information and fixed versions are available in the Fortinet Security Advisory FG-IR-26-081.

For cloud-hosted deployments (FortiAnalyzer Cloud and FortiManager Cloud), customers should verify with Fortinet support that their instances have been updated to patched versions.

Workarounds

• Disable CLI access for read-only administrator accounts where possible until patches can be applied
• Implement strict network access controls limiting who can reach the FortiAnalyzer/FortiManager CLI interface
• Use multi-factor authentication for all administrative access to reduce the risk of credential compromise
• Monitor read-only admin sessions closely and terminate any sessions exhibiting suspicious behavior

# Example: Restrict CLI access via trusted hosts configuration
config system admin setting
    set restrict_cli enable
end

# Configure trusted hosts for admin accounts
config system admin
    edit "readonly_admin"
        set trusthost1 10.0.0.0/24
        set trusthost2 192.168.1.0/24
    next
end