CVE-2021-30770

View on CVE.org

Published Sep 8, 2021 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Description

A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Apple

iOS

affected

Version	Status	Constraints
`unspecified`	affected	< 14.7

Apple

tvOS

affected

Version	Status	Constraints
`unspecified`	affected	< 14.7

Apple

watchOS

affected

Version	Status	Constraints
`unspecified`	affected	< 7.6

Configuration 1 [-]

OR	cpe:2.3:o:apple:iphone_os::::::::
	cpe:2.3:o:apple:tvos::::::::
	cpe:2.3:o:apple:watchos::::::::

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-17687	A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Complete

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.366% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://support.apple.com/en-us/HT212601
https://support.apple.com/en-us/HT212604
https://support.apple.com/en-us/HT212605

History

No history.

Subscriptions

Apple Iphone Os Tvos Watchos

Weaknesses

CWE-287

Sources

CVE record Updated: Aug 3, 2024, 10:40 PM

Status: PUBLISHED
Assigner: apple
Published: Sep 8, 2021, 1:46 PM
Updated: Aug 3, 2024, 10:40 PM
Reserved: Apr 13, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:50 AM

Status: Modified
Published: Sep 8, 2021, 2:15 PM
Modified: Jun 17, 2026, 3:50 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "iOS", "vendor": "Apple", "versions": [{"lessThan": "14.7", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "tvOS", "vendor": "Apple", "versions": [{"lessThan": "14.7", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "watchOS", "vendor": "Apple", "versions": [{"lessThan": "7.6", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations."}], "problemTypes": [{"descriptions": [{"description": "An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-09-08T13:46:45.000Z", "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c", "shortName": "apple"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://support.apple.com/en-us/HT212601"}, {"tags": ["x_refsource_MISC"], "url": "https://support.apple.com/en-us/HT212605"}, {"tags": ["x_refsource_MISC"], "url": "https://support.apple.com/en-us/HT212604"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "product-security@apple.com", "ID": "CVE-2021-30770", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "iOS", "version": {"version_data": [{"version_affected": "<", "version_value": "14.7"}]}}, {"product_name": "tvOS", "version": {"version_data": [{"version_affected": "<", "version_value": "14.7"}]}}, {"product_name": "watchOS", "version": {"version_data": [{"version_affected": "<", "version_value": "7.6"}]}}]}, "vendor_name": "Apple"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations"}]}]}, "references": {"reference_data": [{"name": "https://support.apple.com/en-us/HT212601", "refsource": "MISC", "url": "https://support.apple.com/en-us/HT212601"}, {"name": "https://support.apple.com/en-us/HT212605", "refsource": "MISC", "url": "https://support.apple.com/en-us/HT212605"}, {"name": "https://support.apple.com/en-us/HT212604", "refsource": "MISC", "url": "https://support.apple.com/en-us/HT212604"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T22:40:32.180Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://support.apple.com/en-us/HT212601"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://support.apple.com/en-us/HT212605"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://support.apple.com/en-us/HT212604"}]}]}, "cveMetadata": {"assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c", "assignerShortName": "apple", "cveId": "CVE-2021-30770", "datePublished": "2021-09-08T13:46:45.000Z", "dateReserved": "2021-04-13T00:00:00.000Z", "dateUpdated": "2024-08-03T22:40:32.180Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "iOS", "vendor": "Apple", "versions": [{"lessThan": "14.7", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "tvOS", "vendor": "Apple", "versions": [{"lessThan": "14.7", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "watchOS", "vendor": "Apple", "versions": [{"lessThan": "7.6", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "product-security@apple.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "matchCriteriaId": "D3AF02B7-BF1F-483A-BA47-9B5B92AF1D29", "versionEndExcluding": "14.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*", "matchCriteriaId": "FC9C8462-9BFF-4CC8-AB3A-0AAA8B20A81F", "versionEndExcluding": "14.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*", "matchCriteriaId": "94EF9266-E8BC-4F20-B724-A3151A06192C", "versionEndExcluding": "7.6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations."}, {"lang": "es", "value": "Se abord\u00f3 un problema l\u00f3gico con una comprobaci\u00f3n mejorada. Este problema se corrigi\u00f3 en iOS versi\u00f3n 14.7, tvOS versi\u00f3n 14.7 y watchOS versi\u00f3n 7.6. Un atacante que ya ha logrado la ejecuci\u00f3n de c\u00f3digo del kernel puede ser capaz de omitir las mitigaciones de memoria del kernel"}], "id": "CVE-2021-30770", "lastModified": "2026-06-17T03:50:51.903", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.9, "confidentialityImpact": "NONE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:C/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-09-08T14:15:10.627", "references": [{"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/HT212601"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/HT212604"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/HT212605"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/HT212601"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/HT212604"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/HT212605"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}