Exploitation evidence
Known exploited · CISA KEV listed
Added 2022-08-25. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2022-09-15. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Apple / macOS
Default status: Not specified
- affected: unspecified to < 11.6 (custom)
Apple / macOS
Default status: Not specified
- affected: unspecified to < 2021 (custom)
Apple / watchOS
Default status: Not specified
- affected: unspecified to < 7.6 (custom)
Apple / watchOS
Default status: Not specified
- affected: unspecified to < 14.8 (custom)
Apple / watchOS
Default status: Not specified
- affected: unspecified to < 12.5 (custom)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.03673,
"percentile": 0.89819
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.03673,
"percentile": 0.89755
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.03673,
"percentile": 0.89742
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.03673,
"percentile": 0.89738
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.03673,
"percentile": 0.89731
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.03673,
"percentile": 0.89714
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.03673,
"percentile": 0.89704
}05 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T22:48:14.391Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212804"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212805"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212807"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212806"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://support.apple.com/en-us/HT212824"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-31010",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-01-29T17:28:18.822509Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2022-08-25",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31010"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502 Deserialization of Untrusted Data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:25:36.283Z",
"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-2021-31010"
}
],
"timeline": [
{
"lang": "en",
"time": "2022-08-25T00:00:00.000Z",
"value": "CVE-2021-31010 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "11.6",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "macOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "2021",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "watchOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "7.6",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "watchOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "14.8",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "watchOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "12.5",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release.."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release.",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-05-26T17:36:04.000Z",
"orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
"shortName": "apple"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212804"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212805"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212807"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212806"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://support.apple.com/en-us/HT212824"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "product-security@apple.com",
"ID": "CVE-2021-31010",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "macOS",
"version": {
"version_data": [
{
"version_affected": "<",
"version_value": "11.6"
}
]
}
},
{
"product_name": "macOS",
"version": {
"version_data": [
{
"version_affected": "<",
"version_value": "2021"
}
]
}
},
{
"product_name": "watchOS",
"version": {
"version_data": [
{
"version_affected": "<",
"version_value": "7.6"
}
]
}
},
{
"product_name": "watchOS",
"version": {
"version_data": [
{
"version_affected": "<",
"version_value": "14.8"
}
]
}
},
{
"product_name": "watchOS",
"version": {
"version_data": [
{
"version_affected": "<",
"version_value": "12.5"
}
]
}
}
]
},
"vendor_name": "Apple"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release.."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release."
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://support.apple.com/en-us/HT212804",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212804"
},
{
"name": "https://support.apple.com/en-us/HT212805",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212805"
},
{
"name": "https://support.apple.com/en-us/HT212807",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212807"
},
{
"name": "https://support.apple.com/en-us/HT212806",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212806"
},
{
"name": "https://support.apple.com/en-us/HT212824",
"refsource": "MISC",
"url": "https://support.apple.com/en-us/HT212824"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
"assignerShortName": "apple",
"cveId": "CVE-2021-31010",
"datePublished": "2021-08-24T18:51:48.000Z",
"dateReserved": "2021-04-13T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:36.283Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.03673,
"percentile": 0.89696
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.03673,
"percentile": 0.89679
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.03673,
"percentile": 0.89665
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2021-31010",
"cwes": [
"CWE-20",
"CWE-502"
],
"dateAdded": "2022-08-25",
"dueDate": "2022-09-15",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://support.apple.com/en-us/HT212804, https://support.apple.com/en-us/HT212805, https://support.apple.com/en-us/HT212806, https://support.apple.com/en-us/HT212807, https://support.apple.com/en-us/HT212824; https://nvd.nist.gov/vuln/detail/CVE-2021-31010",
"product": "iOS, macOS, watchOS",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "In affected versions of Apple iOS, macOS, and watchOS, a sandboxed process may be able to circumvent sandbox restrictions.",
"vendorProject": "Apple",
"vulnerabilityName": "Apple iOS, macOS, watchOS Sandbox Bypass Vulnerability"
}