CVE-2025-66422 is a vulnerability categorized under CWE-402 (Transmission of Private Resources into a New Sphere, commonly known as a resource leak) affecting the Tryton trytond server component prior to versions 7.6.11, 7.4.21, 7.0.40, and 6.0.70. Tryton is an open-source enterprise resource planning (ERP) platform widely used for business management. The flaw allows remote attackers with low privileges to retrieve sensitive traceback information from the server. This leakage occurs because error handling or logging mechanisms inadvertently expose internal server setup details, such as stack traces or configuration data, which are normally intended to remain confidential. The vulnerability is exploitable remotely over the network without requiring user interaction, but it does require the attacker to have at least low-level privileges on the system. The CVSS v3.1 base score is 4.3 (medium severity), reflecting the limited confidentiality impact and lack of integrity or availability compromise. Although no known exploits have been reported in the wild, the disclosure of traceback information can assist attackers in crafting more targeted attacks or identifying additional vulnerabilities. The issue has been addressed in the specified patched versions, which sanitize or restrict error information exposure to prevent leakage of sensitive internal details.

For European organizations, the primary impact of this vulnerability is the unintended disclosure of sensitive server traceback information, which can aid attackers in reconnaissance and vulnerability chaining. While it does not directly compromise data integrity or availability, the leakage of internal error details can reveal system configurations, software versions, or coding errors that facilitate further exploitation attempts. Organizations using affected Tryton versions in sectors such as finance, manufacturing, or public administration could face increased risk of targeted attacks if attackers leverage this information. The medium severity rating indicates a moderate risk, but the potential for escalation or lateral movement in a network environment means that timely remediation is important. Additionally, organizations subject to strict data protection regulations (e.g., GDPR) must consider the implications of exposing internal system details that could indirectly lead to data breaches.

European organizations should immediately verify their Tryton trytond versions and upgrade to the fixed releases 7.6.11, 7.4.21, 7.0.40, or 6.0.70 as applicable. In addition to patching, administrators should review and harden error handling and logging configurations to ensure that sensitive internal information is not exposed to unauthorized users. Network segmentation and access controls should be enforced to limit exposure of the Tryton server to trusted users only, reducing the risk of remote exploitation. Monitoring and alerting on unusual access patterns or error message requests can help detect exploitation attempts. Conducting regular security assessments and code reviews of custom Tryton modules may also prevent similar information leakage issues. Finally, organizations should maintain an incident response plan that includes procedures for handling information disclosure vulnerabilities.