CVE-2021-31948

Microsoft SharePoint Server Spoofing Vulnerability

View on CVE.org

Published Jun 8, 2021 CVSS 3.1 · 7.6 High EPSS 1.3% KEV · Not listed

Description

Microsoft SharePoint Server Spoofing Vulnerability

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

Microsoft

Microsoft SharePoint Enterprise Server 2016

affected

Version	Status	Constraints
`16.0.0`	affected	< 16.0.5173.1000

Microsoft

Microsoft SharePoint Server 2019

affected

Version	Status	Constraints
`16.0.0`	affected	< 16.0.10375.20000

Microsoft

Microsoft SharePoint Foundation 2013 Service Pack 1

affected

Version	Status	Constraints
`15.0.0`	affected	< 15.0.5353.1000

Configuration 1 [-]

OR	cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:::::::*
	cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1::::::
	cpe:2.3:a:microsoft:sharepoint_server:2019:::::::*

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-2021-18821	Microsoft SharePoint Server Spoofing Vulnerability

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: 1.3% (1.287% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31948

History

No history.

Subscriptions

Microsoft Sharepoint Enterprise Server Sharepoint Foundation Sharepoint Server

Weaknesses

NVD-CWE-noinfo

Sources

CVE record Updated: Aug 3, 2024, 11:10 PM

Status: PUBLISHED
Assigner: microsoft
Published: Jun 8, 2021, 10:46 PM
Updated: Aug 3, 2024, 11:10 PM
Reserved: Apr 30, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:52 AM

Status: Modified
Published: Jun 8, 2021, 11:15 PM
Modified: Jun 17, 2026, 3:52 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*"], "platforms": ["x64-based Systems"], "product": "Microsoft SharePoint Enterprise Server 2016", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.5173.1000", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*"], "platforms": ["x64-based Systems"], "product": "Microsoft SharePoint Server 2019", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.10375.20000", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*"], "platforms": ["x64-based Systems"], "product": "Microsoft SharePoint Foundation 2013 Service Pack 1", "vendor": "Microsoft", "versions": [{"lessThan": "15.0.5353.1000", "status": "affected", "version": "15.0.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*", "matchCriteriaId": "9C082CC4-6128-475D-BC19-B239E348FDB2", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*", "matchCriteriaId": "F71184B1-7461-4A05-A5D2-03D9EDDC30D5", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*", "matchCriteriaId": "6122D014-5BF1-4AF4-8B4D-80205ED7785E", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Microsoft SharePoint Server Spoofing Vulnerability"}, {"lang": "es", "value": "Una vulnerabilidad de Suplantaci\u00f3n de Identidad de Microsoft SharePoint Server. Este ID de CVE es diferente de CVE-2021-31950, CVE-2021-31964"}], "id": "CVE-2021-31948", "lastModified": "2026-06-17T03:52:32.840", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 5.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.7, "source": "secure@microsoft.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Secondary"}]}, "published": "2021-06-08T23:15:08.650", "references": [{"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31948"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31948"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}