Nullcon Goa

The Meltdown Moment Cve 2025 21533 A Speculative Store Bypass In Oracle Virtualbox

22:26 · 28 Feb 2026 – 01 Mar 2026 · YouTube

About this talk

This talk delves into CVE-2025-21533, a significant vulnerability in Oracle VM VirtualBox that occurs due to a speculative store bypass in versions prior to 7.0.24 and 7.1.6. The speaker discusses how this vulnerability, akin to Meltdown and Spectre, enables low-privileged local attackers to exploit speculative execution and cache-based side channels to compromise sensitive data in virtualized environments. The presentation highlights the implications of this flaw on core virtualization components and emphasizes the necessity for enhanced security measures in virtualization platforms, alongside proactive vulnerability research to address inherent risks in processor design.

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Nullcon Goa

28 Feb 2026 – 01 Mar 2026

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