Riot Games has identified a significant security vulnerability in recent motherboards that could be exploited by cheaters, allowing cheats to operate undetected and undermining competitive gaming integrity. Major motherboard manufacturers, including Asrock, Asus, Gigabyte, and MSI, have released BIOS updates to mitigate this issue. If unaddressed, the vulnerability would have rendered existing direct memory access (DMA) detection and prevention technologies ineffective. The vulnerability involves DMA hardware devices connecting via PCIe slots, which could bypass input-output memory management unit (IOMMU) protections. Riot's Vanguard anti-cheat software may soon require players to update their BIOS to continue playing Valorant, and other anti-cheat systems are likely to implement similar checks.