01 Record

CVE-2024-36347

Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious microcode, potentially resulting in loss of integrity

MediumPUBLISHEDCNA: AMD

CNA base score6.4 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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02 Description

Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious microcode, potentially resulting in loss of integrity

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.10% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 1.0% of scored records. A rank, not a probability.

NVD base score

6.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-06-27 22:14Z1 YR AGO

Last updated

2026-02-26 17:50Z8 MO AGO

Reserved

2024-05-23

Assigning CNA

AMD

Record state

PUBLISHED

Severity

Medium (CVSS 6.4)

CNA CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-347Improper Verification of Cryptographic SignatureBase
CWE-99Improper Control of Resource Identifiers ('Resource Injection')Class

Data version

5.2

Document digest

3651b917e3d330539ee74f18b4984962356758b155d95d5d02cc503a70519c19

05 Affected products

VendorProductVersionsPlatforms

AMDAMD EPYC™ 7001 SeriesNot specified—

AMDAMD EPYC™ 7002 SeriesNot specified—

AMDAMD EPYC™ 7003 SeriesNot specified—

AMDAMD EPYC™ 9004 SeriesNot specified—

AMDAMD EPYC™ 4004 SeriesNot specified—

AMDAMD EPYC™ 9005 SeriesNot specified—

AMDAMD Instinct™ MI300ANot specified—

AMDAMD Ryzen™ 5000 Series Desktop ProcessorsNot specified—

AMDAMD Ryzen™ 5000 Series Desktop Processor with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 3000 Series Desktop ProcessorsNot specified—

AMDAMD Athlon™ 3000 Series Desktop Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 7000 Series Desktop ProcessorsNot specified—

AMDAMD Ryzen™ 4000 Series Desktop Processor with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 8000 Series Processor with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 9000 Series Desktop ProcessorsNot specified—

AMDAMD Ryzen™ Threadripper™ 3000 Series ProcessorsNot specified—

AMDAMD Ryzen™ Threadripper™ PRO 7000 WX-Series ProcessorsNot specified—

AMDAMD Ryzen™ Threadripper™ PRO 3000WX Series ProcessorsNot specified—

AMDAMD Ryzen™ Threadripper™ PRO 5000WX- Series Desktop ProcessorsNot specified—

AMDAMD Athlon™ 3000 Series Mobile Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 3000 Series Mobile Processor with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 4000 Series Mobile Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 5000 Series Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 7020 Series Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 6000 Series Processor with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 7035 Series Processor with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 7000 Series Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 7040 Series Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 8040 Series Mobile Processors with Radeon™ GraphicsNot specified—

AMDAMD Ryzen™ 7045 Series Mobile ProcessorsNot specified—

AMDAMD Ryzen™ AI 300 SeriesNot specified—

AMDAMD Ryzen™ AI Max +Not specified—

AMDAMD Ryzen™ 9000HX Series Mobile ProcessorsNot specified—

AMDAMD EPYC™ Embedded 3000Not specified—

AMDAMD EPYC™ Embedded 7002Not specified—

AMDAMD EPYC™ Embedded 7003Not specified—

AMDAMD EPYC™ Embedded 8004Not specified—

AMDAMD EPYC™ Embedded 9004Not specified—

AMDAMD EPYC™ Embedded 97X4Not specified—

AMDAMD Ryzen™ Embedded R1000Not specified—

AMDAMD Ryzen™ Embedded R2000Not specified—

AMDAMD Ryzen™ Embedded 5000Not specified—

AMDAMD Ryzen™ Embedded 7000Not specified—

AMDAMD Ryzen™ Embedded V1000Not specified—

AMDAMD Ryzen™Embedded V2000Not specified—

AMDAMD Ryzen™Embedded V3000Not specified—

06 References

www.amd.comhttps://www.amd.com/en/resources/product-security/bulletin/amd-sb-7033.html