Listen to this Post
CVE-2025-48418 is a hidden functionality vulnerability, classified under CWE-912 and CWE-1242, affecting Fortinet FortiAnalyzer and FortiManager . The vulnerability exists because the source code for these appliances includes undocumented or “hidden” commands that are not part of the standard, supported CLI . A remote attacker who has already gained authenticated access as a read-only administrator, and who also has access to the command-line interface, can discover and execute these hidden commands . The inclusion of these commands creates a flaw where the software fails to properly restrict functionality, violating the expected privilege boundaries . By invoking this hidden functionality, the low-privileged read-only admin can execute arbitrary code or commands on the underlying system . This allows them to effectively escalate their privileges, gaining full control (root or super-admin level) over the device, which compromises the confidentiality, integrity, and availability of the system .
dailycve form:
Platform: Fortinet FortiAnalyzer/FortiManager
Version: 6.4.x to 7.6.3
Vulnerability: Hidden Functionality
Severity: High
date: 03/10/2026
Prediction: Patch exists already
What Undercode Say:
Analytics:
The vulnerability was discovered during an independent source code audit commissioned by Fortinet, highlighting the importance of secure code reviews . The NVD assigned a CVSS v3.1 base score of 7.2 (High) with a vector of AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, indicating a network attack vector with low complexity, though it requires high privileges to initiate . Fortinet’s own analysis provides a slightly different local vector (AV:L) with a score of 6.7 (Medium) . The CWE-912 (Hidden Functionality) root cause suggests this is a design or maintenance oversight where debug or development backdoors were left in the production code . Given the public disclosure and vendor advisory, a patch is already available, making immediate upgrading the only effective mitigation.
Bash Commands and Codes:
Administrators can use the following bash commands to check the current version of their FortiAnalyzer or FortiManager appliance to determine if they are vulnerable.
SSH into the Fortinet appliance and check the version ssh read-only-admin@<Fortinet_IP> Once logged in via SSH (CLI), run the following command: get system status | grep Version Example output for a vulnerable system: Version: FortiAnalyzer-64 7.4.7 Version: FortiManager-64 7.2.10
To audit for potential exploitation, check for unusual commands in the CLI audit log. This requires higher privileges to view. execute log display or navigate to the logs: cd /var/log/ cat fortianalyzer.log | grep -i "execute hiddencommand" (Note: "hiddencommand" is a placeholder; the actual hidden command is not publicly disclosed)
A non-intrusive check using a vulnerability scanner (Nessus example): The Nessus plugin ID 301727 checks for this vulnerability based on version . The plugin logic typically looks like this (simplified): if (version between "7.0.0" and "7.0.14" or version between "7.2.0" and "7.2.10") then vulnerable
How Exploit:
The attack chain for CVE-2025-48418 is as follows:
- Precondition: The attacker must first obtain valid credentials for a read-only administrator account that has CLI access enabled. This could be achieved through phishing, credential theft, or other means .
- Discovery: Once logged into the CLI, the attacker probes for undocumented commands. This may involve using command completion (tab key) or manipulating command syntax to reveal hidden options.
- Execution: The attacker issues the specific, unpublished hidden command. The application fails to block this command despite the user’s low privilege level .
- Privilege Escalation: The hidden command executes with higher privileges (e.g., root). The attacker can then leverage this to create new admin accounts, install malware, or exfiltrate data .
There is currently no public proof-of-concept (PoC) code available, and no active exploitation in the wild has been reported as of the publication date .
Protection from this CVE:
The primary and most effective protection is to upgrade to the patched version .
– FortiAnalyzer: Upgrade to 7.0.15, 7.2.11, 7.4.8, 7.6.4 or above .
– FortiManager: Upgrade to 7.0.15, 7.2.11, 7.4.8, 7.6.4 or above .
– Cloud Versions: Upgrade to the equivalent fixed cloud versions listed in the Fortinet advisory .
– Workarounds: If immediate patching is not possible, restrict and closely monitor all CLI access. Disable CLI access for read-only administrators if their duties do not require it. Monitor system logs for any unusual or unauthorized command execution .
Impact:
Successful exploitation of this vulnerability has a high impact on the affected FortiAnalyzer and FortiManager appliances .
– Security Impact: A read-only user can gain full administrative (root) control, completely bypassing the intended role-based access controls .
– Operational Impact: The attacker can modify system configurations, delete logs to cover their tracks, and disrupt logging and management services, leading to a loss of network visibility and control .
– Compliance Impact: Organizations may find themselves out of compliance with regulations like PCI-DSS, HIPAA, or GDPR if a breach occurs due to this unpatched vulnerability, leading to legal and financial penalties .
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
