CVE-2025-12501
📋 TL;DR
An integer overflow vulnerability in GameMaker IDE versions below 2024.14.0 can cause application crashes through denial-of-service attacks. This affects GameMaker users who utilize the network_create_server() function in their projects, potentially disrupting game servers and multiplayer functionality.
💻 Affected Systems
- GameMaker IDE
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Game servers crash and become unavailable, causing extended downtime for multiplayer games and disrupting player experiences.
Likely Case
Targeted DoS attacks against vulnerable GameMaker game servers cause temporary service interruptions.
If Mitigated
With proper patching, the vulnerability is eliminated; unpatched systems remain vulnerable to DoS attacks.
🎯 Exploit Status
Integer overflow vulnerabilities in network functions are typically straightforward to exploit for DoS purposes.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024.14.0 or later
Vendor Advisory: https://blogs.opera.com/security/2025/10/gamemaker-security-update-cve-2025-12501/
Restart Required: Yes
Instructions:
1. Update GameMaker IDE to version 2024.14.0 or later
2. Recompile all projects that use network_create_server() function
3. Redeploy updated game executables to production servers
🔧 Temporary Workarounds
Disable network server functionality
allTemporarily disable or remove network_create_server() calls from vulnerable projects
Network segmentation
allIsolate GameMaker game servers behind firewalls with strict network access controls
🧯 If You Can't Patch
- Implement rate limiting on network connections to game servers
- Deploy network-based DoS protection solutions
🔍 How to Verify
Check if Vulnerable:
Check GameMaker IDE version in Help > About menu; verify if projects use network_create_server() functionCheck Version:
gamemaker --version (CLI) or check Help > About in GUIVerify Fix Applied:
Confirm GameMaker IDE version is 2024.14.0 or later and recompiled projects don't crash under network stress tests📡 Detection & Monitoring
Log Indicators:
- Unexpected GameMaker application crashes
- Abnormal termination of game server processes
- High volume of malformed network packets to game ports
Network Indicators:
- Spike in traffic to game server ports (default: 6510)
- Unusual packet patterns targeting network_create_server endpoints
SIEM Query:
source="gamemaker.log" AND ("crash" OR "terminated unexpectedly") OR destination_port=6510 AND packet_size>threshold