CVE-2023-20582

Guest memory corruption via invalid nested PTE faults

Published Feb 11, 2025 · Updated Feb 12, 2025

Improper input handling in the IOMMU on AMD EPYC 9004 processors allows local users to corrupt SEV-SNP guest memory. The IOMMU mishandles invalid nested page-table entries, allowing induced PTE faults to bypass Reverse Map Table checks that normally protect SEV-SNP guest pages. Exploitation requires local, high-privilege control of the virtualization host and affects guest-memory integrity without a reported confidentiality or availability impact.

CVSS severity5.3
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input handling in the IOMMU on AMD EPYC 9004 processors allows local users to corrupt SEV-SNP guest memory. The IOMMU mishandles invalid nested page-table entries, allowing induced PTE faults to bypass Reverse Map Table checks that normally protect SEV-SNP guest pages. Exploitation requires local, high-privilege control of the virtualization host and affects guest-memory integrity without a reported confidentiality or availability impact.

The record

CVE
CVE-2023-20582
Published
Feb 11, 2025
Updated
Feb 12, 2025
Vendor
Advanced Micro Devices, Inc.
Product
AMD EPYC Embedded 9004 Series Processors
Classifications
CWE-1284, T1565.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Advanced Micro Devices, Inc. · AMD EPYC Embedded 9004 Series ProcessorsAffected versions are unavailable in this record.
Advanced Micro Devices, Inc. · AMD EPYC™ 9004 Series ProcessorsAffected versions are unavailable in this record.

Published CVSS scores

5.3Advanced Micro Devices Inc.CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo