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No exploitation reportedFix available

CVE-2024-56161

No exploitation reported by the sources we read.

  • Published2025-02-03
  • WeaknessCWE-347

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious CPU microcode resulting in loss of confidentiality and integrity of a confidential guest running under AMD SEV-SNP.

Timeline

dates in UTC
  1. 2025-02-0318:15CVE publishedNVD

Versions per branch

Products declared by the CNA4 products

As AMD, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • AMD EPYC™ 7001 Seriesother versions: affected

    package NaplesPI 1.0.0.P

    Not affected = NaplesPI 1.0.0.P

  • AMD EPYC™ 7002 Seriesother versions: affected

    package RomePI 1.0.0.L

    Not affected = RomePI 1.0.0.L

  • AMD EPYC™ 7003 Seriesother versions: affected

    package MilanPI 1.0.0.F

    Not affected = MilanPI 1.0.0.F

  • AMD EPYC™ 9004 Seriesother versions: affected

    Not affected = Genoa 1.0.0.E

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-02-03

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • amd64-microcodeUbuntu:25.04all versions · fixed in 3.20250311.1ubuntu0.25.04.1
  • amd64-microcodeUbuntu:24.04:LTSall versions · fixed in 3.20250311.1ubuntu0.24.04.1
  • amd64-microcodeDebian:14all versions · fixed in 3.20250311.1
  • amd64-microcodeDebian:13all versions · fixed in 3.20250311.1
  • amd64-microcodeDebian:12all versions · fixed in 3.20250311.1~deb12u1
  • amd64-microcodeDebian:11all versions · fixed in 3.20250311.1~deb11u1
  • linux-firmwareopenEuler:24.03-LTS-SP1all versions · fixed in 20250311-1.oe2403sp1
  • linux-firmwareopenEuler:24.03-LTSall versions · fixed in 20250311-1.oe2403sp1

5 more package ranges on OSV.dev

Vendor advisories

  • CVE-2024-56161 Red Hat Product Security

    kernel: hw:amd: Vulnerability in guest VM protected by SEV when loading malicious firmware

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2025-02-03
  • CNACVSS 3.17.2known since 2026-10-23
  • CNAweakness (CWE)CWE-347known since 2026-10-23
  • FIRST EPSSEPSS score0.5 %2026-11-09
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
Published
2025-02-03
Last Modified
2026-06-17
NVD status
Deferred

Frequently asked questions

What is CVE-2024-56161?

Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious CPU microcode resulting in loss of confidentiality and integrity of a confidential guest running under AMD SEV-SNP.

Is CVE-2024-56161 actively exploited?

Active exploitation of CVE-2024-56161 has not been confirmed. Its EPSS score was 0.5% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-56161?

CVE-2024-56161 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N.

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