CVE-2025-12501 identifies an integer overflow vulnerability in the GameMaker IDE developed by Opera Norway AS, specifically affecting versions prior to 2024.14.0. The vulnerability arises when the network_create_server() function is used within projects. An integer overflow occurs when an arithmetic operation attempts to create a numeric value that exceeds the maximum size the variable type can hold, causing unexpected behavior. In this case, the overflow can lead to application crashes, resulting in denial-of-service (DoS) conditions. This vulnerability impacts the availability of applications built with the affected versions of GameMaker IDE, particularly those that implement network server functionality. The flaw does not appear to allow code execution or data leakage but can disrupt service by crashing the application. No CVSS score has been assigned yet, and no known exploits have been reported in the wild. The recommended remediation is to update GameMaker IDE to version 2024.14.0 or later and recompile any projects using the network_create_server() function to ensure the vulnerability is mitigated. This update likely includes bounds checking or integer overflow protections to prevent the vulnerability from being triggered.

For European organizations, the primary impact of CVE-2025-12501 is the potential for denial-of-service attacks against applications developed with vulnerable versions of GameMaker IDE. This can lead to service interruptions, degraded user experience, and potential financial losses if the affected applications are critical to business operations or customer engagement. Game development studios, educational institutions, and interactive media companies using GameMaker IDE for networked applications are particularly at risk. Although the vulnerability does not compromise confidentiality or integrity, the availability impact can disrupt online multiplayer games, interactive educational tools, or other networked applications. This could also damage reputation and customer trust if service outages occur. Since exploitation requires the vulnerable application to be running and accessible, organizations exposing such applications publicly or internally are at higher risk. The lack of known exploits in the wild reduces immediate threat but does not eliminate future risk, making timely patching essential.

1. Immediately update GameMaker IDE to version 2024.14.0 or later to obtain the fix for the integer overflow vulnerability. 2. Recompile all projects that use the network_create_server() function to ensure the patched IDE code is applied. 3. Conduct thorough testing of networked applications post-update to confirm stability and absence of crashes. 4. Implement network-level protections such as firewalls and intrusion detection systems to monitor and limit access to applications using network_create_server(), reducing exposure to potential DoS attempts. 5. Educate development teams about secure coding practices to avoid integer overflows and similar vulnerabilities in future projects. 6. Maintain an inventory of applications built with GameMaker IDE to identify and prioritize remediation efforts. 7. Monitor security advisories from Opera Norway AS and related threat intelligence sources for any emerging exploit activity or additional patches.