The vulnerabilities leverage timing-based side channels in AMD’s microarchitectural implementations, allowing attackers to infer sensitive information from system memory and processor states through carefully crafted speculative execution sequences. Advanced Micro Devices has disclosed a series of critical security vulnerabilities affecting multiple generations of its processor architectures, stemming from transient scheduler attacks that exploit speculative execution mechanisms. AMD analysts identified these transient execution vulnerabilities as capable of bypassing traditional security boundaries, potentially exposing privileged information across different execution contexts. The attack methodology centers on manipulating the processor’s speculative execution engine to create measurable timing differences that leak information about memory contents and system state. The impact spans across AMD’s extensive processor portfolio, including third and fourth-generation EPYC server processors, Ryzen desktop and mobile processors from the 5000 through 8000 series, Threadripper workstation processors, and various embedded computing platforms. The attacks target fundamental processor operations including store-to-load forwarding, L1 data cache interactions, and control register access mechanisms, creating opportunities for unauthorized data extraction. CVE-2024-36350 and CVE-2024-36357, both carrying CVSS scores of 5.6, represent the most severe vulnerabilities by enabling attackers to infer data from previous store operations and L1D cache contents respectively. The vulnerabilities require local access and specific microarchitectural conditions to trigger successfully, limiting their practical exploitation to scenarios where attackers already possess some level of system access. These attacks exploit the processor’s attempt to optimize performance through speculative execution, turning this efficiency mechanism into a security liability. The vulnerabilities, identified through four distinct Common Vulnerabilities and Exposures (CVE) entries, pose significant risks to data confidentiality across enterprise and consumer computing environments. Organizations must implement both firmware updates from original equipment manufacturers and corresponding operating system patches to achieve complete protection against these sophisticated microarchitectural attacks. Cyber Security News is a Dedicated News Platform For Cyber News, Cyber Attack News, Hacking News & Vulnerability Analysis.
This Cyber News was published on cybersecuritynews.com. Publication date: Fri, 11 Jul 2025 08:55:11 +0000