CVE-2025-10438 is a high-severity path traversal vulnerability (CWE-27) affecting Yordam Katalog, a product developed by Yordam Information Technology Consulting Education and Electrical Systems Industry Trade Inc. This vulnerability allows an attacker with low privileges (PR:L) and no user interaction (UI:N) to perform directory traversal attacks by manipulating file path inputs using sequences such as 'dir/../../filename'. Such manipulation enables unauthorized access to files outside the intended directory scope, potentially exposing sensitive data. The vulnerability affects versions of Yordam Katalog prior to 21.7. The CVSS 3.1 base score of 7.1 reflects its network attack vector (AV:N), low attack complexity (AC:L), and high impact on confidentiality (C:H), while integrity and availability impacts are minimal (I:N, A:L). Although no known exploits are currently reported in the wild, the vulnerability's characteristics make it a significant risk if exploited, as it can lead to unauthorized disclosure of sensitive files on affected systems. The lack of available patches at the time of reporting increases the urgency for mitigation and monitoring.

For European organizations using Yordam Katalog, this vulnerability poses a substantial risk to confidentiality of sensitive information. Unauthorized file access could lead to exposure of intellectual property, personal data, or configuration files, potentially violating GDPR and other data protection regulations. The low complexity and network accessibility mean attackers could exploit this remotely without user interaction, increasing the threat surface. While integrity and availability impacts are limited, the confidentiality breach alone can result in reputational damage, regulatory fines, and operational disruptions. Organizations in sectors such as education, consulting, and industrial systems—where Yordam Katalog is likely deployed—may face targeted attacks aiming to extract sensitive data or gain footholds for further exploitation.

Given the absence of patches, European organizations should implement immediate compensating controls. These include: 1) Restricting network access to Yordam Katalog instances by implementing strict firewall rules and network segmentation to limit exposure to trusted IPs only; 2) Employing web application firewalls (WAFs) with custom rules to detect and block path traversal patterns such as '../' sequences in URL or input parameters; 3) Conducting thorough input validation and sanitization on any user-supplied file path inputs within the application environment; 4) Monitoring logs for suspicious access patterns indicative of path traversal attempts; 5) Applying the principle of least privilege to the application’s file system permissions to minimize accessible files; and 6) Preparing for rapid deployment of official patches once released by the vendor. Additionally, organizations should review and update incident response plans to address potential data breaches stemming from this vulnerability.