CVE-2021-40040
Estado: ModificadaAlta (7.5)—
Vulnerability of writing data to an arbitrary address in the HW_KEYMASTER module. Successful exploitation of this vulnerability may affect confidentiality.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.55%
- Percentil entre todas las CVEs puntuadas: 44
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (3)
CWE
- NVD-CWE-noinfo
Referencias
- https://consumer.huawei.com/en/support/bulletin/2022/8/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202209-0000001392278845
- https://consumer.huawei.com/en/support/bulletin/2022/8/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202209-0000001392278845
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-40040",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-40040",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-03-03T19:41:04.914056Z"
}
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "psirt@huawei.com",
"affectedData": [
{
"vendor": "n/a",
"product": "HarmonyOS;EMUI;Magic UI",
"versions": [
{
"status": "affected",
"version": "HarmonyOS 2.0"
},
{
"status": "affected",
"version": "EMUI 11.0.0,EMUI 10.1.1,EMUI 10.1.0,EMUI 10.0.0"
},
{
"status": "affected",
"version": "Magic UI 4.0.0,Magic UI 3.1.1,Magic UI 3.1.0,Magic UI 3.0.0"
}
]
}
]
}
],
"published": "2022-08-10T20:15:22.443",
"references": [
{
"url": "https://consumer.huawei.com/en/support/bulletin/2022/8/",
"tags": [
"Vendor Advisory"
],
"source": "psirt@huawei.com"
},
{
"url": "https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202209-0000001392278845",
"tags": [
"Vendor Advisory"
],
"source": "psirt@huawei.com"
},
{
"url": "https://consumer.huawei.com/en/support/bulletin/2022/8/",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202209-0000001392278845",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Vulnerability of writing data to an arbitrary address in the HW_KEYMASTER module. Successful exploitation of this vulnerability may affect confidentiality."
},
{
"lang": "es",
"value": "Una vulnerabilidad de escritura de datos a una dirección arbitraria en el módulo HW_KEYMASTER. Una explotación con éxito de esta vulnerabilidad puede afectar a la confidencialidad"
}
],
"lastModified": "2026-06-17T04:06:26.393",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:huawei:emui:10.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "504F2E73-FFD0-4589-8644-FE77656BB28D"
},
{
"criteria": "cpe:2.3:o:huawei:emui:10.1.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "66AC7F91-917C-40A6-9983-A339EFB091F1"
},
{
"criteria": "cpe:2.3:o:huawei:emui:10.1.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A7FF0AD1-22C2-423B-822A-E6496CEDAB02"
},
{
"criteria": "cpe:2.3:o:huawei:emui:11.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0B701EC6-8208-4D22-95A6-B07D471A8A8B"
},
{
"criteria": "cpe:2.3:o:huawei:harmonyos:2.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3AD62E8B-CB4B-43A6-98E8-09A8A1A3505B"
},
{
"criteria": "cpe:2.3:o:huawei:magic_ui:3.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8A7A4346-1757-48F9-827C-13EABC357302"
},
{
"criteria": "cpe:2.3:o:huawei:magic_ui:3.1.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EFAE846A-00EA-417F-B66F-1F5396BB6139"
},
{
"criteria": "cpe:2.3:o:huawei:magic_ui:3.1.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B655712B-E86C-4BD2-8A99-AEA382C520E7"
},
{
"criteria": "cpe:2.3:o:huawei:magic_ui:4.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F6066FAB-23F5-4CB2-B89E-B00F8835AC39"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "psirt@huawei.com"
}