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How the CVE Works
CVE-2025-24473 is an information disclosure vulnerability in Fortinet FortiClient for Windows (versions 7.2.0 through 7.2.1). When Windows is configured to accept incoming connections on port 8053 (non-default), a remote attacker can exploit this flaw by hosting a malicious webpage. If a victim navigates to this page, sensitive application information is leaked due to improper access controls. The vulnerability stems from insufficient validation of incoming requests, allowing unauthorized retrieval of system or session data.
DailyCVE Form
Platform: FortiClient (Windows)
Version: 7.2.0 – 7.2.1
Vulnerability: Information Disclosure
Severity: Medium
Date: 06/04/2025
Prediction: Patch by 07/15/2025
What Undercode Say:
Analytics:
- Exploitability: Low (requires non-default port 8053)
- Attack Vector: Remote (web-based)
- Impact: Confidentiality loss
Exploit Command (PoC):
import requests target = "http://victim_ip:8053" response = requests.get(target + "/leak_endpoint") print(response.text)
Mitigation Steps:
1. Disable port 8053 if unused:
netsh advfirewall firewall add rule name="Block 8053" dir=in action=block protocol=TCP localport=8053
2. Apply Fortinet’s patch when released.
3. Restrict inbound web traffic via GPO:
Set-NetFirewallProfile -DefaultInboundAction Block
Detection (SIEM Query):
SELECT FROM logs WHERE dest_port = 8053 AND src_ip NOT IN (trusted_ips)
Patch Verification:
Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like "FortiClient"} | Select Version
Workaround (Registry Fix):
reg add "HKLM\SOFTWARE\Fortinet\FortiClient" /v "DisablePort8053" /t REG_DWORD /d 1 /f
References:
- Fortinet Advisory: TBD
- CWE-200: Information Exposure
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
