CVE-2024-36877
Status: DeferredHigh (8.2)—💥 PoC
Micro-Star International Z-series motherboards (Z590, Z490, and Z790) and B-series motherboards (B760, B560, B660, and B460) with firmware 7D25v14, 7D25v17 to 7D25v19, and 7D25v1A to 7D25v1H was discovered to contain a write-what-where condition in the in the SW handler for SMI 0xE3. Motherboard's with the following chipsets are affected: Intel 300, Intel 400, Intel 500, Intel 600, Intel 700, AMD 300, AMD 400, AMD 500, AMD 600 and AMD 700.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Base score: 8.2
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.68%
- Percentile among all scored CVEs: 51
- Score date: 10/6/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
💥 Public exploits
Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.
- Proof of concept on GitHub (unverified) · List of proofs of concept on GitHub
⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.
Affected technologies (7)
⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.
Micro-star International — B460 MotherboardAIMicro-star International — B560 MotherboardAIMicro-star International — B660 MotherboardAIMicro-star International — B760 MotherboardAIMicro-star International — Z490 MotherboardAIMicro-star International — Z590 MotherboardAIMicro-star International — Z790 MotherboardAI
CWEs
- CWE-123
References
Raw JSON (NVD)
Show
{
"id": "CVE-2024-36877",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-36877",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2024-08-13T19:06:14.452163Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 8.2,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 1.5
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"affectedData": [
{
"cpes": [
"cpe:2.3:o:msi:intel_300:*:*:*:*:*:*:*:*"
],
"vendor": "msi",
"product": "intel_300",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:o:msi:intel_400:*:*:*:*:*:*:*:*"
],
"vendor": "msi",
"product": "intel_400",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:o:msi:intel_500:*:*:*:*:*:*:*:*"
],
"vendor": "msi",
"product": "intel_500",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:o:msi:intel_600:*:*:*:*:*:*:*:*"
],
"vendor": "msi",
"product": "intel_600",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:o:msi:intel_700:*:*:*:*:*:*:*:*"
],
"vendor": "msi",
"product": "intel_700",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:o:msi:am4:*:*:*:*:*:*:*:*"
],
"vendor": "msi",
"product": "am4",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:o:msi:am5:*:*:*:*:*:*:*:*"
],
"vendor": "msi",
"product": "am5",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2024-08-12T16:15:15.300",
"references": [
{
"url": "https://csr.msi.com/global/product-security-advisories",
"source": "cve@mitre.org"
},
{
"url": "https://jjensn.com/at-home-in-your-firmware/",
"source": "cve@mitre.org"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-123"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Micro-Star International Z-series motherboards (Z590, Z490, and Z790) and B-series motherboards (B760, B560, B660, and B460) with firmware 7D25v14, 7D25v17 to 7D25v19, and 7D25v1A to 7D25v1H was discovered to contain a write-what-where condition in the in the SW handler for SMI 0xE3. Motherboard's with the following chipsets are affected: Intel 300, Intel 400, Intel 500, Intel 600, Intel 700, AMD 300, AMD 400, AMD 500, AMD 600 and AMD 700."
},
{
"lang": "es",
"value": "Se descubrió que las placas base de la serie Z (Z590, Z490 y Z790) y las placas base de la serie B (B760, B560, B660 y B460) de Micro-Star International con firmware 7D25v14, 7D25v17 a 7D25v19 y 7D25v1A a 7D25v1H contenían un error de escritura. condición de dónde y dónde en el controlador SW para SMI 0xE3."
}
],
"lastModified": "2026-06-17T07:37:15.567",
"sourceIdentifier": "cve@mitre.org"
}