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🏛️ Architecture

AMD Zen 2 CVE-2026-46174: Operation Cache Microarchitecture Flaw Enables Kernel Privilege Escalation

AMD published Security Bulletin AMD-SB-7052 on 28 May for CVE-2026-46174, a microarchitectural flaw in Zen 2 processor operation caches. A local attacker can exploit timing characteristics of the op-cache to execute code with kernel privileges from a userspace context. PI firmware updates are required; the Xen Project also issued XSA-490 for virtualisation platform impacts.

#amd +7
🔬 Assessment

Hardware Vulnerability Assessment: Methodology for CPU Microarchitecture and Firmware Security Evaluation

AMD CVE-2026-46174 and the broader class of CPU microarchitecture vulnerabilities require assessment methodology distinct from software vulnerability scanning. This guide covers the scoping, testing, and remediation verification steps for enterprise hardware security assessments covering processor vulnerabilities.

#hardware-security +5