6.4
MEDIUM
CVSS 3.1
CVE-2024-36347
AMD CPU ROM Microcode Signature Verification Bypass (Validation Bypass)
Overview
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 of x86 instruction execution, loss of confidentiality and integrity of data in x86 CPU privileged context and compromise of SMM execution environment.
Details
INFO
Published Date :
June 27, 2025, 11:15 p.m.
Last Modified :
June 17, 2026, 7:36 a.m.
Remotely Exploit :
No
Source :
[email protected]
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
Apply microcode updates to address improper signature verification in the CPU ROM.
- Update AMD CPU microcode to the latest version.
- Verify signature verification integrity.
- Monitor system for signs of malicious microcode.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-36347.
| URL | Resource |
|---|---|
| https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7033.html |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-36347 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-36347
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-36347 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-36347 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'AMD', 'product': 'AMD EPYC™ 7001 Series', 'versions': [{'status': 'unaffected', 'version': 'NaplesPI 1.0.0.P'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 7002 Series', 'versions': [{'status': 'unaffected', 'version': 'RomePI 1.0.0.L'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 7003 Series', 'versions': [{'status': 'unaffected', 'version': 'MilanPI 1.0.0.F'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 9004 Series', 'versions': [{'status': 'unaffected', 'version': 'Genoa 1.0.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 4004 Series', 'versions': [{'status': 'unaffected', 'version': 'ComboAM5PI1.0.0.a'}, {'status': 'unaffected', 'version': 'ComboAM5PI1.1.0.3c'}, {'status': 'unaffected', 'version': 'ComboAM5PI1.2.0.3'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ 9005 Series', 'versions': [{'status': 'unaffected', 'version': 'TurinPI 1.0.0.4'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Instinct™ MI300A', 'versions': [{'status': 'unaffected', 'version': 'MI300PI_SR5 1.0.0.8'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 5000 Series Desktop Processors', 'versions': [{'status': 'unaffected', 'version': 'ComboAM4v2PI 1.2.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'ComboAM4v2PI 1.2.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 3000 Series Desktop Processors', 'versions': [{'status': 'unaffected', 'version': 'ComboAM4PI 1.0.0.D'}, {'status': 'unaffected', 'version': 'ComboAM4v2PI 1.2.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'ComboAM4PI 1.0.0.D'}, {'status': 'unaffected', 'version': 'ComboAM4v2PI 1.2.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 7000 Series Desktop Processors', 'versions': [{'status': 'unaffected', 'version': 'ComboAM5PI 1.0.0.a'}, {'status': 'unaffected', 'version': 'ComboAM5PI 1.1.0.3c'}, {'status': 'unaffected', 'version': 'ComboAM5PI 1.2.0.3'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 4000 Series Desktop Processor with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'ComboAM4v2PI 1.2.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 8000 Series Processor with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'ComboAM5PI 1.1.0.3c'}, {'status': 'unaffected', 'version': 'ComboAM5PI 1.2.0.3'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 9000 Series Desktop Processors', 'versions': [{'status': 'unaffected', 'version': 'ComboAM5PI 1.2.0.3c'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Threadripper™ 3000 Series Processors', 'versions': [{'status': 'unaffected', 'version': 'CastlePeakPI-SP3r3 1.0.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors', 'versions': [{'status': 'unaffected', 'version': 'StormPeakPI-SP6 1.0.0.1k'}, {'status': 'unaffected', 'version': 'StormPeakPI-SP6 1.1.0.0i'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors', 'versions': [{'status': 'unaffected', 'version': 'ChagallWSPI-sWRX8 1.0.0.B'}, {'status': 'unaffected', 'version': 'CastlePeakWSPI-sWRX8 1.0.0.g'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Threadripper™ PRO 5000WX- Series Desktop Processors', 'versions': [{'status': 'unaffected', 'version': 'ChagallWSPI-sWRX8 1.0.0.B'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'PicassoPI-FP5 1.0.1.2b'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'PicassoPI-FP5 1.0.1.2b'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'RenoirPI-FP6 1.0.0.Eb'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'CezannePI-FP6 1.0.1.1b'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'MendocinoPI-FT6 1.0.0.7b'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 6000 Series Processor with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'RembrandtPI-FP7 1.0.0.Bb'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 7035 Series Processor with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'RembrandtPI-FP7 1.0.0.Bb'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 7000 Series Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'CezannePI-FP6 1.0.1.1b'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'PhoenixPI-FP8-FP7 1.2.0.0'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics', 'versions': [{'status': 'unaffected', 'version': 'PhoenixPI-FP8-FP7 1.2.0.0'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 7045 Series Mobile Processors', 'versions': [{'status': 'unaffected', 'version': 'DragonRangeFL1 1.0.0.3g'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ AI 300 Series', 'versions': [{'status': 'unaffected', 'version': 'StrixKrakenPI-FP8_1.1.0.0b'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ AI Max +', 'versions': [{'status': 'unaffected', 'version': 'StrixHaloPI-FP11_1.0.0.1'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ 9000HX Series Mobile Processors', 'versions': [{'status': 'unaffected', 'version': 'FireRangeFL1PI 1.0.0.0a'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 3000', 'versions': [{'status': 'unaffected', 'version': 'SnowyOwl PI 1.1.0.E'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 7002', 'versions': [{'status': 'unaffected', 'version': 'EmbRomePI-SP3 1.0.0.D'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 7003', 'versions': [{'status': 'unaffected', 'version': 'EmbMilan PI-SP3 1.0.0.A'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 8004', 'versions': [{'status': 'unaffected', 'version': 'EmbGenoaPI-SP5 1.0.0.9'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 9004', 'versions': [{'status': 'unaffected', 'version': 'EmbGenoaPI-SP5 1.0.0.9'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD EPYC™ Embedded 97X4', 'versions': [{'status': 'unaffected', 'version': 'EmbGenoaPI-SP5 1.0.0.9'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Embedded R1000', 'versions': [{'status': 'unaffected', 'version': 'EmbeddedPI-FP5 1.2.0.F'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Embedded R2000', 'versions': [{'status': 'unaffected', 'version': 'EmbeddedR2KPI 1.0.0.5'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Embedded 5000', 'versions': [{'status': 'unaffected', 'version': 'EmbAM4PI 1.0.0.7'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Embedded 7000', 'versions': [{'status': 'unaffected', 'version': 'EmbeddedAM5PI 1.0.0.3'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™ Embedded V1000', 'versions': [{'status': 'unaffected', 'version': 'EmbeddedPI-FP5 1.2.0.F'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™Embedded V2000', 'versions': [{'status': 'unaffected', 'version': 'EmbeddedPI-FP6 1.0.0.B'}], 'defaultStatus': 'affected'}, {'vendor': 'AMD', 'product': 'AMD Ryzen™Embedded V3000', 'versions': [{'status': 'unaffected', 'version': 'EmbeddedPI-FP7R2 1.0.0.C'}], 'defaultStatus': 'affected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2024-36347', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2025-07-01T03:55:55.838463Z'} -
New CVE Received by [email protected]
Jun. 27, 2025
Action Type Old Value New Value Added 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 of x86 instruction execution, loss of confidentiality and integrity of data in x86 CPU privileged context and compromise of SMM execution environment. Added CVSS V3.1 AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-347 Added Reference https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7033.html
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.