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U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a crucial vulnerability in Fortinet FortiWeb in its Known Exploited Vulnerabilities (KEV) catalog, verifying that the SQL injection flaw is being actively exploited in cyberattacks across the globe.
The vulnerability, tracked as CVE-2025-25257, affects Fortinet’s FortiWeb web application firewall and carries a severe CVSS score of 9.6 out of 10.
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The vulnerability stems from failure to properly handle special SQL elements, enabling unverified attackers to run unauthorized SQL commands through tailored HTTP or HTTPS requests.
“An improper neutralization of special elements used in an SQL command (‘SQL Injection’) vulnerability [CWE-89] in FortiWeb may allow an unauthenticated attacker to execute unauthorized SQL code or commands via crafted HTTP or HTTPs requests,” Fortinet explained in its advisory.
The vulnerability is in FortiWeb’s Fabric Connector, which connects the firewall to other Fortinet security products.
Security researchers discovered that attackers can exploit the flaw by sending malicious requests to the /api/fabric/device/status endpoint with crafted Authorization headers.
Active Exploitation Campaign:
The Shadowserver Foundation reported that 77 FortiWeb instances were compromised due to a vulnerability as of July 15, 2025, down from 85 the day before.
An exploitation campaign started on July 11, 2025, when watchTowr Labs released proof-of-concept exploit code. This shows how quickly attackers can use available exploits.
“We see 77 cases on 2025-07-15, down from 85 on 2025-07-14. CVE-2025-25257 exploitation activity observed since Jul 11th,” The Shadowserver Foundation reported.
Attacks use webshells on hacked systems, allowing attackers to maintain access. The US has the most compromised devices with 40, followed by the Netherlands, Singapore, and the UK.
