FKIE_CVE-2021-30731
Vulnerability from fkie_nvd - Published: 2021-09-08 14:15 - Updated: 2026-06-17 03:50
Severity
Summary
This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-004 Catalina. An unprivileged application may be able to capture USB devices.
References
| URL | Tags | ||
|---|---|---|---|
| product-security@apple.com | https://support.apple.com/en-us/HT212529 | Vendor Advisory | |
| product-security@apple.com | https://support.apple.com/en-us/HT212600 | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://support.apple.com/en-us/HT212529 | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://support.apple.com/en-us/HT212600 | Vendor Advisory |
{
"affected": [
{
"affectedData": [
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "11.4",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "2021",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"source": "product-security@apple.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*",
"matchCriteriaId": "141A3268-DBD7-4F40-8BE4-CF8D9A0DF3E1",
"versionEndIncluding": "10.15.6",
"versionStartIncluding": "10.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*",
"matchCriteriaId": "A654B8A2-FC30-4171-B0BB-366CD7ED4B6A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*",
"matchCriteriaId": "F12CC8B5-C1EB-419E-8496-B9A3864656AD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*",
"matchCriteriaId": "F1F4BF7F-90D4-4668-B4E6-B06F4070F448",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*",
"matchCriteriaId": "7FD7176C-F4D1-43A7-9E49-BA92CA0D9980",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*",
"matchCriteriaId": "2703DE0B-8A9E-4A9D-9AE8-028E22BF47CA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*",
"matchCriteriaId": "0F441A43-1669-478D-9EC8-E96882DE4F9F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*",
"matchCriteriaId": "D425C653-37A2-448C-BF2F-B684ADB08A26",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*",
"matchCriteriaId": "A54D63B7-B92B-47C3-B1C5-9892E5873A98",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*",
"matchCriteriaId": "C1C795B9-E58D-467C-83A8-2D45C792292F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
"matchCriteriaId": "391D9971-3C67-4B94-9AF2-1D4D23DAF95F",
"versionEndExcluding": "11.4",
"versionStartIncluding": "11.0.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-004 Catalina. An unprivileged application may be able to capture USB devices."
},
{
"lang": "es",
"value": "Se abord\u00f3 este problema con comprobaciones mejoradas. Este problema se corrigi\u00f3 en macOS Big Sur versi\u00f3n 11.4, Security Update 2021-004 Catalina. Una aplicaci\u00f3n no privilegiada puede ser capaz de capturar dispositivos USB"
}
],
"id": "CVE-2021-30731",
"lastModified": "2026-06-17T03:50:46.737",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 1.9,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-09-08T14:15:09.083",
"references": [
{
"source": "product-security@apple.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212529"
},
{
"source": "product-security@apple.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212600"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212529"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.apple.com/en-us/HT212600"
}
],
"sourceIdentifier": "product-security@apple.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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