Riot Blocks Valorant Players Over Unpatched Motherboard BIOS Vulnerability

Because the exploit works at a low level, it can evade traditional detection methods. Riot considers this a serious threat to competitive integrity, as it enables cheating without triggering standard safeguards. After discovering the vulnerability, Riot’s security team worked with motherboard manufacturers to confirm the issue. BIOS updates were subsequently released to correct the IOMMU initialization process and restore proper DMA protection. These updates prevent the exploit from being used to gain an unfair advantage.

Riot has now enforced a policy that blocks Valorant from launching on systems running affected BIOS versions. Users who do not update their firmware will be unable to access the game until the required update is installed. While BIOS updates are typically optional, this case effectively makes them mandatory for affected Valorant players. Riot has not provided direct update tools, instead instructing users to obtain the correct firmware from their motherboard manufacturer. The incident underscores the increasing role of firmware security in online gaming. As anti-cheat systems move deeper into hardware-level protections, vulnerabilities at the BIOS level can have immediate and widespread impact. Users are advised to update their motherboard BIOS promptly to restore access and ensure system security.

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