CVE-2021-28310 (GCVE-0-2021-28310)
Vulnerability from cvelistv5 – Published: 2021-04-13 19:32 – Updated: 2025-10-21 23:25Title
Win32k Elevation of Privilege Vulnerability
Summary
Win32k Elevation of Privilege Vulnerability
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Elevation of Privilege
- CWE-787 - Out-of-bounds Write
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1803 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:arm64:* |
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:* |
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
|
| Microsoft | Windows 10 Version 1909 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server, version 1909 (Server Core installation) |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:* |
|
| Microsoft | Windows 10 Version 2004 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server version 2004 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:* |
|
| Microsoft | Windows 10 Version 20H2 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:arm64:* |
|
| Microsoft | Windows Server version 20H2 |
Affected:
10.0.0 , < publication
(custom)
cpe:2.3:o:microsoft:windows_server_20H2:*:*:*:*:*:*:*:* |
Date Public
2021-04-13 07:00
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1925c31f-13c3-421e-bbdc-3727798c7018
Exploited: Yes
Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEV entry: Microsoft Win32k Privilege Escalation Vulnerability | Affected: Microsoft / Win32k | Description: Microsoft Windows Win32k contains an unspecified vulnerability that allows for privilege escalation. | 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-2021-28310
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-787 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Win32k |
| Due Date | 2021-11-17 |
| Date Added | 2021-11-03 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Win32k Privilege Escalation Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:28 UTC
| Updated: 2026-02-06 07:17 UTC
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 6a184729-f0e0-4936-8fb5-caa810846f62
Exploited: Yes
Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEVIntel entry: Win32k Elevation of Privilege Vulnerability | Affected: Microsoft / Windows 10 Version 1803, Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows Server, version 1909 (Server Core installation), Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2 | CVSS: 7.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Win32k Elevation of Privilege Vulnerability |
| Vendor | Microsoft |
| Product | Windows 10 Version 1803, Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows Server, version 1909 (Server Core installation), Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2 |
| Added Date | 2021-11-03T00:00:00.000Z |
| Cvss Score | 7.8 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-19 12:47 UTC
| Updated: 2026-06-19 12:47 UTC
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T21:40:14.187Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-28310",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-03-07T20:21:44.115657Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2021-11-03",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28310"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787 Out-of-bounds Write",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:25:49.229Z",
"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-2021-28310"
}
],
"timeline": [
{
"lang": "en",
"time": "2021-11-03T00:00:00.000Z",
"value": "CVE-2021-28310 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*",
"cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:x64:*",
"cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:arm64:*"
],
"platforms": [
"32-bit Systems",
"x64-based Systems",
"ARM64-based Systems"
],
"product": "Windows 10 Version 1803",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*",
"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*"
],
"platforms": [
"32-bit Systems",
"x64-based Systems",
"ARM64-based Systems"
],
"product": "Windows 10 Version 1809",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2019",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2019 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*",
"cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:*",
"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*"
],
"platforms": [
"32-bit Systems",
"x64-based Systems",
"ARM64-based Systems"
],
"product": "Windows 10 Version 1909",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"product": "Windows Server, version 1909 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*"
],
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 2004",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"product": "Windows Server version 2004",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*",
"cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:arm64:*"
],
"platforms": [
"32-bit Systems",
"ARM64-based Systems"
],
"product": "Windows 10 Version 20H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:o:microsoft:windows_server_20H2:*:*:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"product": "Windows Server version 20H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "publication",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
}
],
"datePublic": "2021-04-13T07:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Win32k Elevation of Privilege Vulnerability"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Elevation of Privilege",
"lang": "en-US",
"type": "Impact"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-12-29T19:21:07.847Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310"
}
],
"title": "Win32k Elevation of Privilege Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2021-28310",
"datePublished": "2021-04-13T19:32:47.000Z",
"dateReserved": "2021-03-12T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:49.229Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"cisa_known_exploited": {
"cveID": "CVE-2021-28310",
"cwes": "[\"CWE-787\"]",
"dateAdded": "2021-11-03",
"dueDate": "2021-11-17",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-28310",
"product": "Win32k",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Microsoft Windows Win32k contains an unspecified vulnerability that allows for privilege escalation.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Win32k Privilege Escalation Vulnerability"
},
"epss": {
"cve": "CVE-2021-28310",
"date": "2026-06-21",
"epss": "0.0833",
"percentile": "0.9423"
},
"fkie_nvd": {
"cisaActionDue": "2021-11-17",
"cisaExploitAdd": "2021-11-03",
"cisaRequiredAction": "Apply updates per vendor instructions.",
"cisaVulnerabilityName": "Microsoft Win32k Privilege Escalation Vulnerability",
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"00345596-E9E0-4096-8DC6-0212F4747A13\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"2E332666-2E03-468E-BC30-299816D6E8ED\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A1B570A8-ED1A-46B6-B8AB-064445F8FC4C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_2004:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"D4DBE5B2-AE10-4251-BCDA-DC5EDEE6EE67\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"6AFD13A6-A390-4400-9029-2F4058CA17E2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"ADE7E7B1-64AC-4986-A50B-0918A42C05BB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2004:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"62224791-644C-4D1F-AD77-56B16CF27630\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"DB79EE26-FC32-417D-A49C-A1A63165A968\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_20h2:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"84F9B6B1-4FEE-4D4B-B35F-B07822CCD669\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"Win32k Elevation of Privilege Vulnerability\"}, {\"lang\": \"es\", \"value\": \"Vulnerabilidad de elevaci\\u00f3n de privilegios de Win32k. Este ID de CVE es diferente de CVE-2021-27072\"}]",
"id": "CVE-2021-28310",
"lastModified": "2024-11-21T05:59:27.450",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"secure@microsoft.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}, {\"source\": \"nvd@nist.gov\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"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:L/AC:L/Au:N/C:P/I:P/A:P\", \"baseScore\": 4.6, \"accessVector\": \"LOCAL\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 3.9, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
"published": "2021-04-13T20:15:16.267",
"references": "[{\"url\": \"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310\", \"source\": \"secure@microsoft.com\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}]",
"sourceIdentifier": "secure@microsoft.com",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-787\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2021-28310\",\"sourceIdentifier\":\"secure@microsoft.com\",\"published\":\"2021-04-13T20:15:16.267\",\"lastModified\":\"2025-10-30T19:55:23.683\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Win32k Elevation of Privilege Vulnerability\"},{\"lang\":\"es\",\"value\":\"Vulnerabilidad de elevaci\u00f3n de privilegios de Win32k. Este ID de CVE es diferente de CVE-2021-27072\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"secure@microsoft.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"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:L/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":4.6,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.9,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"cisaExploitAdd\":\"2021-11-03\",\"cisaActionDue\":\"2021-11-17\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Microsoft Win32k Privilege Escalation Vulnerability\",\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"00345596-E9E0-4096-8DC6-0212F4747A13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2E332666-2E03-468E-BC30-299816D6E8ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A1B570A8-ED1A-46B6-B8AB-064445F8FC4C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_2004:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D4DBE5B2-AE10-4251-BCDA-DC5EDEE6EE67\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6AFD13A6-A390-4400-9029-2F4058CA17E2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"ADE7E7B1-64AC-4986-A50B-0918A42C05BB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2004:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"62224791-644C-4D1F-AD77-56B16CF27630\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB79EE26-FC32-417D-A49C-A1A63165A968\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_20h2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"84F9B6B1-4FEE-4D4B-B35F-B07822CCD669\"}]}]}],\"references\":[{\"url\":\"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310\",\"source\":\"secure@microsoft.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28310\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"US Government Resource\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T21:40:14.187Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-28310\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-07T20:21:44.115657Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2021-11-03\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28310\"}}}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2021-11-03T00:00:00.000Z\", \"value\": \"CVE-2021-28310 added to CISA KEV\"}], \"references\": [{\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28310\", \"tags\": [\"government-resource\"]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-787\", \"description\": \"CWE-787 Out-of-bounds Write\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-04T19:12:54.279Z\"}}], \"cna\": {\"title\": \"Win32k Elevation of Privilege Vulnerability\", \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C\"}, \"scenarios\": [{\"lang\": \"en-US\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*\", \"cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:x64:*\", \"cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:arm64:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows 10 Version 1803\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"32-bit Systems\", \"x64-based Systems\", \"ARM64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*\", \"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*\", \"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows 10 Version 1809\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"32-bit Systems\", \"x64-based Systems\", \"ARM64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows Server 2019\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows Server 2019 (Server Core installation)\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*\", \"cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:*\", \"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows 10 Version 1909\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"32-bit Systems\", \"x64-based Systems\", \"ARM64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows Server, version 1909 (Server Core installation)\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows 10 Version 2004\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"32-bit Systems\", \"ARM64-based Systems\", \"x64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows Server version 2004\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*\", \"cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:arm64:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows 10 Version 20H2\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"32-bit Systems\", \"ARM64-based Systems\"]}, {\"cpes\": [\"cpe:2.3:o:microsoft:windows_server_20H2:*:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows Server version 20H2\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"publication\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}], \"datePublic\": \"2021-04-13T07:00:00.000Z\", \"references\": [{\"url\": \"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en-US\", \"value\": \"Win32k Elevation of Privilege Vulnerability\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"type\": \"Impact\", \"description\": \"Elevation of Privilege\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2023-12-29T19:21:07.847Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2021-28310\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-21T23:25:49.229Z\", \"dateReserved\": \"2021-03-12T00:00:00.000Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2021-04-13T19:32:47.000Z\", \"assignerShortName\": \"microsoft\"}",
"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…