CVE-2025-46399 is a medium-severity vulnerability identified in the fig2dev software, specifically involving a NULL pointer dereference within the genge_itp_spline function. Fig2dev is a component of the Xfig suite, commonly used for converting Xfig drawings into various output formats. The vulnerability arises when local input is manipulated, causing the program to dereference a NULL pointer, which leads to a denial of service condition by crashing the application. This flaw affects availability but does not impact confidentiality or integrity directly. The vulnerability requires local access to the system, has a high attack complexity, no privileges are required, and user interaction is necessary to trigger the flaw. The CVSS 3.1 base score is 4.7, reflecting a medium severity level. No known exploits are currently reported in the wild, and no patches or vendor advisories have been linked yet. The lack of vendor and product details suggests this is a newly discovered issue with limited public information. The vulnerability is primarily a local denial of service vector caused by improper input validation or handling in the genge_itp_spline function, which results in a NULL pointer dereference and subsequent crash of the fig2dev process.

For European organizations, the impact of CVE-2025-46399 is primarily related to availability disruption of systems running fig2dev, which could affect workflows involving graphical data conversion or processing. While fig2dev is not a core system component, it is used in certain technical, academic, and engineering environments for diagram and figure generation. A successful exploitation could cause denial of service on local machines, potentially interrupting productivity or automated processes relying on fig2dev. Since exploitation requires local access and user interaction, the risk of remote widespread disruption is low. However, in environments where fig2dev is integrated into automated pipelines or used by multiple users on shared systems, repeated crashes could degrade service availability. The vulnerability does not allow privilege escalation or data compromise, limiting its impact to service interruption. European organizations with research institutions, universities, or engineering firms using fig2dev should be aware of this issue to prevent unexpected application crashes and maintain operational continuity.

To mitigate CVE-2025-46399, organizations should first identify all instances of fig2dev in their environment, especially on workstations and servers used for graphical processing. Since no official patches are currently available, temporary mitigation includes restricting local user access to trusted personnel only and educating users to avoid feeding malformed or suspicious input to fig2dev. Implementing application whitelisting and monitoring for abnormal fig2dev crashes can help detect exploitation attempts. Organizations should also consider isolating fig2dev usage to dedicated environments or virtual machines to contain potential denial of service impacts. Once patches or updates are released by maintainers, prompt application of these fixes is critical. Additionally, reviewing and hardening local access controls and user permissions will reduce the risk of exploitation. Incorporating fig2dev usage into endpoint detection and response (EDR) monitoring may provide early warning of exploitation attempts. Finally, maintaining regular backups of critical data and configurations ensures recovery in case of service disruption.