Heap-based Buffer Overflow Vulnerability in Hyperscan by Intel

CVE-2026-63540

What is CVE-2026-63540?

A heap-based buffer overflow vulnerability exists in versions of Hyperscan prior to v5.4.2.1, which can lead to denial of service. This issue is exploitable by unprivileged software adversaries with unauthenticated access, requiring low complexity attack methods. Conditions for exploitation include local access and passive user interaction, potentially impacting system availability. While the vulnerability does not affect confidentiality or integrity, it poses a risk to the system’s operational capabilities, emphasizing the need for timely updates to secure the environment.

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