CVE-2025-41018: Sergestec Exito SQLi Vulnerability

CVE-2025-41018 Overview

CVE-2025-41018 is a critical SQL injection vulnerability affecting Sergestec's Exito v8.0. This vulnerability allows an attacker to retrieve, create, update, and delete databases through the cat parameter in the /public.php endpoint. SQL injection flaws enable attackers to manipulate database queries by injecting malicious SQL code, potentially leading to complete compromise of the affected system's data integrity and confidentiality.

Critical Impact

Unauthenticated attackers can fully manipulate the backend database, enabling data theft, unauthorized modifications, and potential complete system compromise through the vulnerable cat parameter.

Affected Products

• Sergestec Exito v8.0

Discovery Timeline

• 2025-10-16 - CVE-2025-41018 published to NVD
• 2025-10-21 - Last updated in NVD database

Technical Details for CVE-2025-41018

Vulnerability Analysis

This SQL injection vulnerability exists in Sergestec Exito v8.0, a business management software solution. The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), which represents one of the most dangerous classes of web application vulnerabilities.

The vulnerable endpoint /public.php fails to properly sanitize user-supplied input passed through the cat parameter before incorporating it into SQL queries. This lack of input validation allows attackers to inject arbitrary SQL commands that are then executed by the database server with the same privileges as the application.

The network-based attack vector with no authentication requirements means that any remote attacker with network access to the vulnerable application can exploit this flaw. The vulnerability enables full read/write access to the database, potentially exposing sensitive business data, customer information, and administrative credentials stored within the system.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries in the /public.php endpoint. When user input from the cat parameter is directly concatenated into SQL statements without proper sanitization or escaping, it creates an injection point that attackers can exploit to modify the intended SQL query logic.

Attack Vector

The attack vector is network-based, requiring no user interaction or authentication. An attacker can craft malicious HTTP requests containing SQL injection payloads in the cat parameter of /public.php. These payloads can be designed to:

• Extract sensitive data from the database using UNION-based or blind SQL injection techniques
• Modify existing records or insert new malicious data
• Delete database contents, causing data loss and service disruption
• Potentially escalate access by extracting credential hashes or session tokens

The vulnerability can be exploited by sending crafted GET or POST requests to the vulnerable endpoint with specially formatted cat parameter values containing SQL metacharacters and commands.

Detection Methods for CVE-2025-41018

Indicators of Compromise

• Unusual or malformed requests to /public.php containing SQL syntax characters such as single quotes, double dashes, semicolons, or UNION keywords in the cat parameter
• Database error messages appearing in application responses or logs
• Unexpected database queries or data access patterns in database audit logs
• Evidence of bulk data extraction or unauthorized data modifications

Detection Strategies

• Implement web application firewall (WAF) rules to detect SQL injection patterns in requests to /public.php
• Monitor application logs for requests containing SQL metacharacters in the cat parameter
• Enable database query logging and alert on suspicious query patterns such as UNION SELECT, information_schema queries, or batch commands
• Deploy intrusion detection systems (IDS) with SQL injection signature rules targeting the affected endpoint

Monitoring Recommendations

• Enable detailed access logging for all requests to the Sergestec Exito application, particularly the /public.php endpoint
• Configure database audit logging to track all queries executed against the backend database
• Set up alerts for multiple failed database queries or unusual query response times that may indicate exploitation attempts
• Monitor for data exfiltration patterns such as unusually large response sizes from the /public.php endpoint

How to Mitigate CVE-2025-41018

Immediate Actions Required

• Restrict network access to the Sergestec Exito application to trusted IP addresses only
• Implement a web application firewall (WAF) with SQL injection protection rules in front of the application
• If possible, disable or restrict access to the vulnerable /public.php endpoint until a patch is available
• Review database access logs for evidence of prior exploitation
• Ensure database accounts used by the application follow the principle of least privilege

Patch Information

Organizations should monitor the INCIBE CERT Notice on Vulnerabilities for official security advisories and patch information from Sergestec. Contact the vendor directly to obtain information about security updates that address this vulnerability.

Workarounds

• Deploy a reverse proxy or WAF configured to filter requests containing SQL injection patterns in the cat parameter
• Implement input validation at the network perimeter to reject requests with suspicious characters or SQL keywords
• Restrict database user permissions to limit the potential impact of successful exploitation
• Consider temporarily disabling the affected functionality if it is not business-critical
• Implement network segmentation to isolate systems running Sergestec Exito from sensitive network resources

# Example WAF rule to block SQL injection attempts (ModSecurity format)
SecRule ARGS:cat "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection Attempt Detected in cat parameter',\
    log,\
    auditlog"