CVE-2025-13596 is classified under CWE-209 (Generation of Error Message Containing Sensitive Information) and CWE-200 (Information Exposure). The vulnerability exists in the error handling mechanism of the ATISoluciones CIGES Application, specifically in versions 2.15.6 and earlier. When the application encounters unexpected conditions that trigger unhandled exceptions, it returns verbose error messages and stack traces directly to the client. These error messages can disclose sensitive internal details such as filesystem paths, SQL queries, database connection strings, and environment configuration data. Because the application does not sanitize or restrict the information included in these error messages, remote unauthenticated attackers can leverage this to gather intelligence about the internal workings and architecture of the system. This reconnaissance can facilitate more targeted attacks, such as SQL injection, privilege escalation, or lateral movement, although the vulnerability itself does not allow direct exploitation or system compromise. The CVSS v4.0 base score is 2.7, reflecting low severity due to the limited impact on confidentiality and no impact on integrity or availability. The vulnerability requires no privileges or user interaction, and the attack vector is network-based. No patches or official fixes are currently linked, and no known exploits have been reported in the wild. The vulnerability was published on November 24, 2025, indicating it is a recent discovery. Organizations using affected versions of CIGES should review their error handling configurations and consider immediate mitigation to prevent sensitive data leakage.

For European organizations, the primary impact of CVE-2025-13596 is the unintended disclosure of sensitive internal information that could aid attackers in planning subsequent attacks. This information leakage can compromise confidentiality by revealing database connection details, internal file paths, and SQL queries, which may expose the underlying infrastructure and data architecture. While the vulnerability does not directly allow system compromise, the intelligence gained can increase the risk of successful exploitation of other vulnerabilities or misconfigurations. Organizations in sectors with high regulatory requirements for data protection, such as finance, healthcare, and critical infrastructure, may face compliance risks if sensitive information is exposed. Additionally, the exposure of environment configuration data could reveal security controls or software versions, facilitating targeted attacks. The low CVSS score reflects the limited direct impact, but the potential for enabling further attacks means that European entities should not ignore this vulnerability. The risk is higher for organizations that expose the vulnerable application to the internet or untrusted networks without adequate filtering or monitoring.

To mitigate CVE-2025-13596, organizations should implement the following specific measures beyond generic advice: 1) Immediately review and modify the error handling configuration in the ATISoluciones CIGES application to ensure that detailed error messages and stack traces are not returned to clients, especially unauthenticated users. 2) Implement centralized logging of detailed errors on the server side, restricting access to authorized personnel only, to maintain troubleshooting capabilities without exposing sensitive information externally. 3) Employ web application firewalls (WAFs) or reverse proxies to detect and block requests that trigger error conditions or attempt to exploit information disclosure. 4) Conduct thorough code reviews and security testing focusing on error handling and exception management to identify and remediate similar issues. 5) Restrict network access to the CIGES application to trusted internal networks or VPNs where possible, reducing exposure to unauthenticated remote attackers. 6) Monitor application logs and network traffic for unusual patterns that may indicate reconnaissance attempts exploiting this vulnerability. 7) Engage with ATISoluciones for official patches or updates and apply them promptly once available. 8) Educate development and operations teams on secure error handling best practices to prevent recurrence.