CVE-2025-7039 is a vulnerability identified in the glib component of Red Hat Enterprise Linux 10. The flaw arises from an integer overflow during the creation of temporary files, which leads to an out-of-bounds memory access. This memory corruption enables a local attacker to exploit path traversal by manipulating symbolic links, thereby gaining unauthorized access to private temporary file contents. The root cause is insufficient validation of file path lengths during temporary file operations, which allows crafted inputs to bypass intended directory restrictions. Although the vulnerability requires local access and has a high attack complexity, it does not require user interaction or privileges, making it a concern for environments where untrusted local users or processes exist. The vulnerability does not impact confidentiality directly but can lead to limited integrity violations by unauthorized file access. No known exploits are currently reported in the wild, and no patches or fixes have been linked yet. The CVSS v3.1 base score is 3.7, indicating a low severity primarily due to the need for local network access and high attack complexity.

For European organizations, the impact of CVE-2025-7039 is generally limited due to its low severity and requirement for local access without privilege escalation. However, in multi-tenant environments such as shared hosting providers, cloud service providers, or organizations with multiple user accounts on Red Hat Enterprise Linux 10 systems, this vulnerability could allow a malicious local user or compromised process to access sensitive temporary files belonging to other users. This could lead to unauthorized disclosure of sensitive data or manipulation of temporary files, potentially affecting application behavior or data integrity. Critical infrastructure or sectors with strict data protection requirements (e.g., finance, healthcare, government) may face compliance risks if such unauthorized access occurs. The absence of remote exploitability reduces the risk of widespread attacks but does not eliminate insider threat scenarios or attacks from compromised local accounts.

To mitigate CVE-2025-7039, European organizations running Red Hat Enterprise Linux 10 should: 1) Monitor Red Hat security advisories closely and apply patches promptly once available. 2) Restrict local access to trusted users only, minimizing the number of accounts with shell or system access. 3) Implement strict file system permissions and use security modules like SELinux or AppArmor to confine processes and limit their ability to create or manipulate symbolic links in temporary directories. 4) Regularly audit temporary directories (/tmp, /var/tmp) for suspicious symbolic links or unauthorized files. 5) Employ system integrity monitoring tools to detect anomalous file system changes. 6) Consider using containerization or virtualization to isolate applications and reduce the impact of local exploits. 7) Educate system administrators and users about the risks of local privilege abuse and enforce strong authentication and session management policies.