A GPU driver is software that lets the operating system communicate with a graphics processor. It translates high-level commands from the OS and applications into instructions the GPU can execute, and it often includes low-level code that runs with significant privileges.
In cyber security, GPU drivers matter because privileged, hardware-adjacent code has a large attack surface. A flaw in a driver can lead to crashes, denial of service, information disclosure, or in severe cases code execution with elevated permissions. Defenders treat driver updates as important because GPU drivers are common in desktops, servers, and virtualized environments, where a vulnerable driver may exist on many hosts. Attackers may target drivers through malformed inputs, unsupported features, or exposed interfaces; defenders reduce risk by keeping driver versions current, validating compatibility before rollout, and inventorying every system that depends on the same driver line.