What’s Vulnerable › Vulnerabilities

CVE-2024-21953

• Severity: medium (CVSS 5.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-10 · updated 2026-06-17
• Weakness: CWE-1284

Description

Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.

Affected products

• AMD EPYC™ 8004 Series Processors: all versions
• AMD EPYC™ 9004 Series Processors: all versions
• AMD EPYC™ Embedded 9004 Series Processors: all versions

References

• https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html
• https://www.amd.com/en/resources/product-security/bulletin/Emb-Auto.html

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