CVE-2025-53680: Fortinet FortiAP RCE Vulnerability

CVE-2025-53680 Overview

CVE-2025-53680 is an OS command injection vulnerability [CWE-78] affecting multiple Fortinet FortiAP, FortiAP-U, and FortiAP-W2 product lines. The flaw stems from improper neutralization of special elements within command-line interface (CLI) requests. An authenticated attacker holding privileged credentials can supply crafted CLI input to execute unauthorized operating system commands on the underlying device. Fortinet published advisory FG-IR-26-131 covering the affected versions and remediation guidance.

Critical Impact
Authenticated privileged attackers can execute arbitrary OS commands on FortiAP devices, compromising the confidentiality, integrity, and availability of wireless access point infrastructure.

Affected Products

Fortinet FortiAP 7.6.0 through 7.6.2, 7.4.0 through 7.4.5, and all versions of 7.2, 7.0, and 6.4
Fortinet FortiAP-U 7.0.0 through 7.0.5 and all versions of 6.2
Fortinet FortiAP-W2 7.4.0 through 7.4.4 and all versions of 7.2 and 7.0

Discovery Timeline

2026-05-12 - CVE-2025-53680 published to NVD
2026-05-15 - Last updated in NVD database

Technical Details for CVE-2025-53680

Vulnerability Analysis

The vulnerability resides in the CLI request handling logic of FortiAP firmware. The CLI parser passes user-supplied arguments into operating system command execution without adequate sanitization. An attacker with privileged CLI access can embed shell metacharacters or command separators into otherwise valid CLI parameters. The CLI process then executes the injected commands with the privileges of the underlying service. Because FortiAP devices serve as wireless access infrastructure, successful exploitation can pivot attackers into wireless management workflows and adjacent network segments.

Root Cause

The root cause is improper neutralization of special elements used in an OS command, classified as [CWE-78]. Input flowing from CLI commands into shell-level execution is not consistently filtered or parameterized. Special characters such as command separators, subshell delimiters, and redirection operators retain their shell semantics when processed.

Attack Vector

Exploitation requires local CLI access and high privileges, consistent with the CVSS vector indicating a local attack vector and no user interaction. An authenticated administrator or an attacker who has otherwise obtained privileged credentials issues crafted CLI commands containing injected operating system payloads. Successful exploitation results in arbitrary command execution within the device's runtime environment.

No public proof-of-concept exploit is available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog at the time of publication.

Detection Methods for CVE-2025-53680

Indicators of Compromise

Unexpected CLI sessions originating from administrative accounts at unusual times or from atypical management workstations
CLI command history entries containing shell metacharacters such as ;, |, &&, backticks, or $() constructs within parameter values
Outbound network connections from FortiAP devices to addresses outside normal management or controller infrastructure

Detection Strategies

Centralize FortiAP syslog and CLI audit logs into a SIEM and alert on CLI parameters containing shell command separators or process substitution syntax
Monitor authentication events for privileged FortiAP accounts and correlate with subsequent configuration changes or firmware-level activity
Baseline normal administrative CLI usage and flag deviations such as new command patterns, unusual argument lengths, or commands executed outside change windows

Monitoring Recommendations

Forward FortiAP logs to a centralized logging platform with retention sufficient to support retrospective hunting after patching
Track changes to administrative account inventories on FortiGate controllers managing affected access points
Review wireless controller and access point management traffic for anomalous control-plane sessions following privilege changes

How to Mitigate CVE-2025-53680

Immediate Actions Required

Apply the fixed firmware releases identified in Fortinet advisory FG-IR-26-131 for each affected FortiAP, FortiAP-U, and FortiAP-W2 branch
Audit privileged accounts on FortiAP devices and connected FortiGate controllers, removing dormant or unnecessary administrative access
Rotate credentials for any privileged administrator accounts that may have been exposed or shared

Patch Information

Fortinet has published remediation details in security advisory FG-IR-26-131. Administrators should upgrade affected FortiAP 7.6.x and 7.4.x branches to the fixed builds listed in the advisory. FortiAP 7.2, 7.0, 6.4, FortiAP-U 6.2, and FortiAP-W2 7.0 and 7.2 branches are end-of-engineering or end-of-support paths in the advisory; migrate these devices to a supported, fixed release.

Workarounds

Restrict CLI access to a small set of hardened management workstations using network ACLs and management-VLAN segmentation
Enforce strong authentication, including multi-factor authentication where supported, for all FortiAP and FortiGate administrative accounts
Apply the principle of least privilege to administrative roles so that fewer accounts can issue the CLI commands required to exploit this vulnerability

bash

# Example: restrict management access on a FortiGate-managed FortiAP profile
config system interface
    edit "mgmt"
        set allowaccess ssh https
        set trusthost1 10.10.10.0 255.255.255.0
    next
end