CVE-2024-21977

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CVSS 3.1

3.2 low

EPSS

<1%p5

Published

Sep 5, 2025 (Sep 5, 2025)

Modified

Jun 17, 2026

Description

Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.

Weakness: CWE-459
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.1%)

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