Sleeping Bouncer Vulnerability Impacts Motherboards from Gigabyte, MSI, ASRock and ASUS

Cybersecuritynews •Tushar Subhra Dutta • December 22, 2025

A significant security vulnerability has emerged affecting motherboards from Gigabyte, MSI, ASRock, and ASUS. Riot Games analysts and researchers identified a critical flaw during their ongoing investigation into gaming system security. The vulnerability, termed “Sleeping Bouncer,” exploits a weakness in the pre-boot protection mechanisms that are supposed to safeguard computer hardware during system initialization. The […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Sleeping Bouncer Vulnerability Affects Major Motherboard Brands A critical security vulnerability named 'Sleeping Bouncer' has been identified in motherboards from Gigabyte, MSI, ASRock, and ASUS. Discovered by Riot Games analysts, this flaw exploits weaknesses in pre-boot protection mechanisms, posing risks during system initialization. 2 sources 39

Extracted Entities

Sleeping Bouncer Vulnerability Impacts Motherboards from Gigabyte, MSI, ASRock and ASUS

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Extracted Entities

Companies (3)

Tools (1)

Vulnerabilities (1)