CVE-2021-30663 (GCVE-0-2021-30663)
Vulnerability from cvelistv5 – Published: 2021-09-08 14:49 – Updated: 2025-10-21 23:25
VLAI
CISA KEV
Summary
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.
Severity
7.8 (High)
CWE
- Processing maliciously crafted web content may lead to arbitrary code execution
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://support.apple.com/en-us/HT212532 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212534 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212341 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212335 | x_refsource_MISC |
| https://support.apple.com/en-us/HT212336 | x_refsource_MISC |
Impacted products
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b199d970-f059-4e88-b16c-082166b79fc1
Exploited: Yes
Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEV entry: Apple Multiple Products WebKit Integer Overflow Vulnerability | Affected: Apple / Multiple Products | Description: Apple iOS, iPadOS, macOS, tvOS, and Safari WebKit contain an integer overflow vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing. | Required action: Apply updates per vendor instructions. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-30663
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-20 CWE-190 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Multiple Products |
| Due Date | 2021-11-17 |
| Date Added | 2021-11-03 |
| Vendorproject | Apple |
| Vulnerabilityname | Apple Multiple Products WebKit Integer Overflow Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:28 UTC
| Updated: 2026-02-06 07:17 UTC
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T22:40:32.148Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212532"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212534"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212341"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212335"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212336"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-30663",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-04T16:23:07.360860Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2021-11-03",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-190",
"description": "CWE-190 Integer Overflow or Wraparound",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:25:34.065Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663"
}
],
"timeline": [
{
"lang": "en",
"time": "2021-11-03T00:00:00.000Z",
"value": "CVE-2021-30663 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "11.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "14.5",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "12.5",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "14.6",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "14.1",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Processing maliciously crafted web content may lead to arbitrary code execution",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-09-08T14:49:41.000Z",
"orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
"shortName": "apple"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212532"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212534"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212341"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212335"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212336"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "product-security@apple.com",
"ID": "CVE-2021-30663",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "macOS",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "11.3"
}
]
}
},
{
"product_name": "macOS",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "14.5"
}
]
}
},
{
"product_name": "macOS",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "12.5"
}
]
}
},
{
"product_name": "macOS",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "14.6"
}
]
}
},
{
"product_name": "macOS",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "14.1"
}
]
}
}
]
},
"vendor_name": "Apple"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Processing maliciously crafted web content may lead to arbitrary code execution"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://support.apple.com/en-us/HT212532",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212532"
},
{
"name": "https://support.apple.com/en-us/HT212534",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212534"
},
{
"name": "https://support.apple.com/en-us/HT212341",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212341"
},
{
"name": "https://support.apple.com/en-us/HT212335",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212335"
},
{
"name": "https://support.apple.com/en-us/HT212336",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212336"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
"assignerShortName": "apple",
"cveId": "CVE-2021-30663",
"datePublished": "2021-09-08T14:49:41.000Z",
"dateReserved": "2021-04-13T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:34.065Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"cisa_known_exploited": {
"cveID": "CVE-2021-30663",
"cwes": "[\"CWE-20\", \"CWE-190\"]",
"dateAdded": "2021-11-03",
"dueDate": "2021-11-17",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-30663",
"product": "Multiple Products",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Apple iOS, iPadOS, macOS, tvOS, and Safari WebKit contain an integer overflow vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.",
"vendorProject": "Apple",
"vulnerabilityName": "Apple Multiple Products WebKit Integer Overflow Vulnerability"
},
"epss": {
"cve": "CVE-2021-30663",
"date": "2026-05-27",
"epss": "0.00956",
"percentile": "0.76682"
},
"fkie_nvd": {
"cisaActionDue": "2021-11-17",
"cisaExploitAdd": "2021-11-03",
"cisaRequiredAction": "Apply updates per vendor instructions.",
"cisaVulnerabilityName": "Apple Multiple Products WebKit Integer Overflow Vulnerability",
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"11.0\", \"versionEndExcluding\": \"11.3.1\", \"matchCriteriaId\": \"38C24205-D2E5-4354-B48F-A690D94DCCC7\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"14.1.1\", \"matchCriteriaId\": \"FFDA8CE0-8F2C-4FA7-91F8-A720F56EBC5D\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"14.0\", \"versionEndExcluding\": \"14.5.1\", \"matchCriteriaId\": \"35BD9C02-08C2-45A2-BC2C-A19111C293F3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"12.5.3\", \"matchCriteriaId\": \"443BF1FD-EC67-437D-A9CA-EEB3EF25B701\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"14.0\", \"versionEndExcluding\": \"14.5.1\", \"matchCriteriaId\": \"EBBD83AD-8615-422B-AE3E-39D4AB86D8FC\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"14.6\", \"matchCriteriaId\": \"9076D8C8-70CD-4DE5-8BAE-8CA6A5BEDDB3\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.\"}, {\"lang\": \"es\", \"value\": \"Se abord\\u00f3 un desbordamiento de enteros con una comprobaci\\u00f3n de entrada mejorada. Este problema es corregido en iOS versi\\u00f3n 14.5.1 y iPadOS versi\\u00f3n 14.5.1, tvOS versi\\u00f3n 14.6, iOS versi\\u00f3n 12.5.3, Safari versi\\u00f3n 14.1.1, macOS Big Sur versi\\u00f3n 11.3.1. El procesamiento de contenido web maliciosamente dise\\u00f1ado puede conllevar a una ejecuci\\u00f3n de c\\u00f3digo arbitrario\"}]",
"id": "CVE-2021-30663",
"lastModified": "2024-11-21T06:04:23.317",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:P/I:P/A:P\", \"baseScore\": 6.8, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
"published": "2021-09-08T15:15:13.413",
"references": "[{\"url\": \"https://support.apple.com/en-us/HT212335\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212336\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212341\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212532\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212534\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212335\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212336\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212341\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212532\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212534\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
"sourceIdentifier": "product-security@apple.com",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-190\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2021-30663\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2021-09-08T15:15:13.413\",\"lastModified\":\"2025-10-23T14:55:43.020\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.\"},{\"lang\":\"es\",\"value\":\"Se abord\u00f3 un desbordamiento de enteros con una comprobaci\u00f3n de entrada mejorada. Este problema es corregido en iOS versi\u00f3n 14.5.1 y iPadOS versi\u00f3n 14.5.1, tvOS versi\u00f3n 14.6, iOS versi\u00f3n 12.5.3, Safari versi\u00f3n 14.1.1, macOS Big Sur versi\u00f3n 11.3.1. El procesamiento de contenido web maliciosamente dise\u00f1ado puede conllevar a una ejecuci\u00f3n de c\u00f3digo arbitrario\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"cisaExploitAdd\":\"2021-11-03\",\"cisaActionDue\":\"2021-11-17\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Apple Multiple Products WebKit Integer Overflow Vulnerability\",\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-190\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-190\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.1.1\",\"matchCriteriaId\":\"FFDA8CE0-8F2C-4FA7-91F8-A720F56EBC5D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"14.0\",\"versionEndExcluding\":\"14.5.1\",\"matchCriteriaId\":\"35BD9C02-08C2-45A2-BC2C-A19111C293F3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"12.5.3\",\"matchCriteriaId\":\"443BF1FD-EC67-437D-A9CA-EEB3EF25B701\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"14.0\",\"versionEndExcluding\":\"14.5.1\",\"matchCriteriaId\":\"EBBD83AD-8615-422B-AE3E-39D4AB86D8FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"11.0\",\"versionEndExcluding\":\"11.3.1\",\"matchCriteriaId\":\"14B2F397-655E-44C5-B9A3-8C4435675F42\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.6\",\"matchCriteriaId\":\"9076D8C8-70CD-4DE5-8BAE-8CA6A5BEDDB3\"}]}]}],\"references\":[{\"url\":\"https://support.apple.com/en-us/HT212335\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212336\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212341\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212532\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212534\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212335\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212336\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212341\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212532\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://support.apple.com/en-us/HT212534\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\",\"Release Notes\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"Third Party Advisory\",\"US Government Resource\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://support.apple.com/en-us/HT212532\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://support.apple.com/en-us/HT212534\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://support.apple.com/en-us/HT212341\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://support.apple.com/en-us/HT212335\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://support.apple.com/en-us/HT212336\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T22:40:32.148Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-30663\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-04T16:23:07.360860Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2021-11-03\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663\"}}}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2021-11-03T00:00:00.000Z\", \"value\": \"CVE-2021-30663 added to CISA KEV\"}], \"references\": [{\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663\", \"tags\": [\"government-resource\"]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-190\", \"description\": \"CWE-190 Integer Overflow or Wraparound\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-03T13:57:58.013Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"unspecified\", \"lessThan\": \"11.3\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"unspecified\", \"lessThan\": \"14.5\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"unspecified\", \"lessThan\": \"12.5\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"unspecified\", \"lessThan\": \"14.6\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"unspecified\", \"lessThan\": \"14.1\", \"versionType\": \"custom\"}]}], \"references\": [{\"url\": \"https://support.apple.com/en-us/HT212532\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://support.apple.com/en-us/HT212534\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://support.apple.com/en-us/HT212341\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://support.apple.com/en-us/HT212335\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://support.apple.com/en-us/HT212336\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"Processing maliciously crafted web content may lead to arbitrary code execution\"}]}], \"providerMetadata\": {\"orgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"shortName\": \"apple\", \"dateUpdated\": \"2021-09-08T14:49:41.000Z\"}, \"x_legacyV4Record\": {\"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"11.3\", \"version_affected\": \"\u003c\"}]}, \"product_name\": \"macOS\"}, {\"version\": {\"version_data\": [{\"version_value\": \"14.5\", \"version_affected\": \"\u003c\"}]}, \"product_name\": \"macOS\"}, {\"version\": {\"version_data\": [{\"version_value\": \"12.5\", \"version_affected\": \"\u003c\"}]}, \"product_name\": \"macOS\"}, {\"version\": {\"version_data\": [{\"version_value\": \"14.6\", \"version_affected\": \"\u003c\"}]}, \"product_name\": \"macOS\"}, {\"version\": {\"version_data\": [{\"version_value\": \"14.1\", \"version_affected\": \"\u003c\"}]}, \"product_name\": \"macOS\"}]}, \"vendor_name\": \"Apple\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://support.apple.com/en-us/HT212532\", \"name\": \"https://support.apple.com/en-us/HT212532\", \"refsource\": \"MISC\"}, {\"url\": \"https://support.apple.com/en-us/HT212534\", \"name\": \"https://support.apple.com/en-us/HT212534\", \"refsource\": \"MISC\"}, {\"url\": \"https://support.apple.com/en-us/HT212341\", \"name\": \"https://support.apple.com/en-us/HT212341\", \"refsource\": \"MISC\"}, {\"url\": \"https://support.apple.com/en-us/HT212335\", \"name\": \"https://support.apple.com/en-us/HT212335\", \"refsource\": \"MISC\"}, {\"url\": \"https://support.apple.com/en-us/HT212336\", \"name\": \"https://support.apple.com/en-us/HT212336\", \"refsource\": \"MISC\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Processing maliciously crafted web content may lead to arbitrary code execution\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-30663\", \"STATE\": \"PUBLIC\", \"ASSIGNER\": \"product-security@apple.com\"}}}}",
"cveMetadata": "{\"cveId\": \"CVE-2021-30663\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-21T23:25:34.065Z\", \"dateReserved\": \"2021-04-13T00:00:00.000Z\", \"assignerOrgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"datePublished\": \"2021-09-08T14:49:41.000Z\", \"assignerShortName\": \"apple\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…