Fortinet FortiWeb SQL Injection Vulnerability (CVE-2025-25257) Critical Security Advisory and Mitigation Guide
Executive & SecOps Summary
SECOPS ASSESSMENTFortinet FortiWeb versions 7.6.0 through 7.6.3, 7.4.0 through 7.4.7, 7.2.0 through 7.2.10, and 7.0.0 through 7.0.10
An unauthenticated remote attacker can execute unauthorized SQL commands via crafted HTTP/HTTPS requests, potentially leading to sensitive data exposure, system compromise, and remote code execution (RCE).
Immediately upgrade to the patched versions (7.6.4, 7.4.8, 7.2.11, 7.0.11 or higher) and restrict access to the management interface.
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Apply the official firmware updates immediately. Use the following CLI commands to perform the upgrade via TFTP:
# Download and restore the secure firmware image via TFTP
execute restore image tftp fortiweb-firmware.out 192.168.1.99
# Verify the system status and version after reboot
get system status2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, restrict access to the FortiWeb management interface by configuring trusted hosts to allow only authorized administrative IP addresses.
# Restrict administrative access to trusted subnets/IPs
config system admin
edit 'admin'
set trusthost1 10.10.10.0 255.255.255.0
set trusthost2 192.168.10.50 255.255.255.255
next
end3. Log Audit & IoC Verification Commands
Audit the system logs for suspicious SQL syntax or anomalous HTTP requests targeting the management interface.
# Check system event logs for unauthorized access attempts
show log system event
# Search traffic logs for common SQL injection patterns
show log traffic search-key 'union select'Stop Exposing VPN Ports to the Internet — Switch to Zero-Trust Access
Eliminate public-facing VPN concentrators and firewall management ports with identity-first Zero-Trust Network Access.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2025-25257) is a critical SQL Injection vulnerability [CWE-89] in Fortinet FortiWeb. The root cause lies in the improper neutralization of special elements within SQL commands. Due to insufficient input validation, user-supplied input in HTTP or HTTPS requests is directly concatenated into database queries, allowing arbitrary SQL execution.
2. Exploitation Mechanics & Attack Scenario
An unauthenticated attacker can exploit this vulnerability by sending specially crafted HTTP or HTTPS requests containing malicious SQL payloads to the FortiWeb interface. Since the input is processed without proper sanitization, the database engine executes the injected commands. Attackers can leverage this to bypass authentication, extract sensitive configuration data, or abuse database privileges to write files to the system, leading to full Remote Code Execution (RCE).
3. Infrastructure & Business Impact
With a CVSS score of 9.8 (Critical) and its inclusion in the CISA Known Exploited Vulnerabilities (KEV) catalog, this vulnerability poses an immediate threat to enterprise networks. Successful exploitation allows attackers to compromise the WAF itself, which serves as the primary line of defense, enabling lateral movement into the internal network and causing severe data breaches and operational downtime.
Official Vendor Advisories & References
An improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability [CWE-89] vulnerability in Fortinet FortiWeb 7.6.0 through 7.6.3, FortiWeb 7.4.0 through 7.4.7, FortiWeb 7.2.0 through 7.2.10, FortiWeb 7.0.0 through 7.0.10 allows an unauthenticated attacker to execute unauthorized SQL code or commands via crafted HTTP or HTTPs requests.
Frequently Asked SecOps Questions (CVE-2025-25257)
FAQQ1. How critical is CVE-2025-25257 and is it actively exploited in the wild?
CVE-2025-25257 is rated CVSS 9.8 (CRITICAL) with a 30-day EPSS exploitation probability of 99.9%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2025-25257?
Primary impacted vendors include fortinet across fortiweb. Scope summary: FortiWeb 7.6.0 to 7.6.3, 7.4.0 to 7.4.7, 7.2.0 to 7.2.10, 7.0.0 to 7.0.10
Q3. What temporary mitigations or workarounds exist for CVE-2025-25257 before patching?
[Mitigation] Immediately upgrade to the patched versions (7.6.4, 7.4.8, 7.2.11, 7.0.11 or higher) and restrict access to the management interface. Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
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