HackZoneLabs News
Newsletter

CVE-2024-21954

Vulnerability record

  • High 7.0

Description

Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices that do not support Address Translation Cache (ATC), potentially resulting in denial of service.

Key facts

Published
12 Nov 2026
Last changed
13 Nov 2026
Assigned by
AMD
EPSS
0.267% likely to be exploited in the next 30 days, higher than 18.945% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: none; Automatable: no; Technical impact: partial

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.0CVSS 4.0, Highfrom the CNA (AMD)CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
AMDAMD EPYC™ 7003 Series Processors
  • Default status: affected
  • MilanPI-SP3_1.0.0.J (unaffected)
AMDAMD EPYC™ 9004 Series Processors
  • Default status: affected
  • GenoaPI_1.0.0.H (unaffected)
AMDAMD EPYC™ Embedded 7003 Series Processors
  • Default status: affected
  • EmbMilanPI-SP3 1.0.0.D (unaffected)
AMDAMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")
  • Default status: affected
  • EmbGenoaPI-SP5 1.0.0.D (unaffected)

Timeline

  1. 12 Nov 2026 Published

Weakness

References