Understanding and Defending Against CVE-2026-19874: A Critical Heap-Based Buffer Overflow in Metal Gear Online 3
CVE-2026-19874 is a critical heap-based buffer overflow vulnerability in Konami's Metal Gear Online 3. It stems from improper validation of lobby data fields related to kicked players, allowing for potential arbitrary code execution within the game process. This vulnerability has a CVSS score of 9.1, indicating a high severity level. Understanding the root cause, attack surface, and exploitation mechanics is crucial for defenders to implement effective mitigations and detections.