CVE-2018-25202: SQL Injection in SAT CFDI 3.3

The SQL Injection vulnerability in SAT CFDI 3.3 presents a significant risk. An attacker can leverage this flaw to bypass authentication mechanisms and gain unauthorized access to the underlying database. This could involve extracting sensitive user data, financial records, or other confidential information stored within the database. Furthermore, an attacker might be able to modify data, potentially disrupting business operations or causing financial loss. The potential blast radius extends to any system or service that relies on the compromised SAT CFDI instance. While no direct precedent is immediately apparent, SQL Injection vulnerabilities are frequently exploited, and this flaw shares similarities with other database-centric attacks.

1. Reserved2026-03-26
2. Published2026-03-26
3. EPSS updated2026-04-02

The primary mitigation for CVE-2018-25202 is to upgrade to a patched version of SAT CFDI. If upgrading immediately is not feasible, implement temporary workarounds. Deploy a Web Application Firewall (WAF) with rules specifically designed to detect and block SQL Injection attempts targeting the signIn endpoint. Carefully review and sanitize all user inputs, particularly the 'id' parameter, to prevent malicious code from being injected. Consider implementing input validation and parameterized queries to further reduce the attack surface. Monitor application logs for suspicious SQL queries or error messages that might indicate an attempted exploitation. After upgrade, confirm the vulnerability is resolved by attempting a SQL injection attack on the signIn endpoint and verifying that it is blocked.