CVE-2025-49706 (GCVE-0-2025-49706)
Vulnerability from cvelistv5 – Published: 2025-07-08 16:58 – Updated: 2026-08-04 03:55- CWE-287 - Improper Authentication
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| https://www.microsoft.com/en-us/security/blog/202… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |
Affected:
16.0.0 , < 16.0.5508.1000
(custom)
|
guessed | |
| Microsoft | Microsoft SharePoint Server 2019 |
Affected:
16.0.0 , < 16.0.10417.20027
(custom)
|
guessed | |
| Microsoft | Microsoft SharePoint Server Subscription Edition |
Affected:
16.0.0 , < 16.0.18526.20424
(custom)
|
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
Exploited: Yes
Timestamps
Scope
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-287 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | SharePoint |
| Due Date | 2025-07-23 |
| Date Added | 2025-07-22 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft SharePoint Improper Authentication Vulnerability |
| Knownransomwarecampaignuse | Known |
References
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
Exploited: Yes
Timestamps
Scope
Evidence
Type: Public Report
Signal: Confirmed Compromise
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Microsoft SharePoint Server Spoofing Vulnerability |
| Vendor | Microsoft |
| Product | Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition |
| Added Date | 2026-06-01T10:37:23.318Z |
| Cvss Score | 6.5 |
| Epss Score | 0.99879 |
| Cvss Severity | MEDIUM |
| Epss Percentile | 0.99962 |
| Used In Malware | yes |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-49706",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-07-22T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2025-07-22",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T03:55:53.894Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/"
},
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706"
}
],
"timeline": [
{
"lang": "en",
"time": "2025-07-22T00:00:00.000Z",
"value": "CVE-2025-49706 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Enterprise Server 2016",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.5508.1000",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Server 2019",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.10417.20027",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Server Subscription Edition",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.18526.20424",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*",
"versionEndExcluding": "16.0.5508.1000",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*",
"versionEndExcluding": "16.0.10417.20027",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*",
"versionEndExcluding": "16.0.18526.20424",
"versionStartIncluding": "16.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2025-07-08T07:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "CWE-287: Improper Authentication",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-13T19:07:42.100Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft SharePoint Server Spoofing Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706"
}
],
"title": "Microsoft SharePoint Server Spoofing Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2025-49706",
"datePublished": "2025-07-08T16:58:07.343Z",
"dateReserved": "2025-06-09T19:59:44.875Z",
"dateUpdated": "2026-08-04T03:55:53.894Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"cisa_known_exploited": {
"cveID": "CVE-2025-49706",
"cwes": [
"CWE-287"
],
"dateAdded": "2025-07-22",
"dueDate": "2025-07-23",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Known",
"notes": "CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770 ; https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/ ; https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 ; https://nvd.nist.gov/vuln/detail/CVE-2025-49706",
"product": "SharePoint",
"requiredAction": "Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.",
"shortDescription": "Microsoft SharePoint contains an improper authentication vulnerability that allows an authorized attacker to perform spoofing over a network. Successfully exploitation could allow an attacker to view sensitive information and make some changes to disclosed information. This vulnerability could be chained with CVE-2025-49704. CVE-2025-53771 is a patch bypass for CVE-2025-49706, and the updates for CVE-2025-53771 include more robust protection than those for CVE-2025-49706.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft SharePoint Improper Authentication Vulnerability"
},
"epss": {
"cve": "CVE-2025-49706",
"date": "2026-09-20",
"epss": "0.99063",
"percentile": "0.99931"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Enterprise Server 2016",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.5508.1000",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Server 2019",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.10417.20027",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Server Subscription Edition",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.18526.20424",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
}
],
"source": "secure@microsoft.com"
}
],
"cisaActionDue": "2025-07-23",
"cisaExploitAdd": "2025-07-22",
"cisaRequiredAction": "Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.",
"cisaVulnerabilityName": "Microsoft SharePoint Improper Authentication Vulnerability",
"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_server:*:*:*:*:subscription:*:*:*",
"matchCriteriaId": "B006E0D5-DEDF-490A-9BC6-D2DC34DF98B2",
"versionEndExcluding": "16.0.18526.20424",
"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": "Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network."
},
{
"lang": "es",
"value": "La autenticaci\u00f3n incorrecta en Microsoft Office SharePoint permite que un atacante autorizado realice suplantaci\u00f3n de identidad a trav\u00e9s de una red."
}
],
"id": "CVE-2025-49706",
"lastModified": "2026-08-04T05:16:34.723",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 2.5,
"source": "secure@microsoft.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-49706",
"options": [
{
"exploitation": "active"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-07-22T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2025-07-08T17:15:58.250",
"references": [
{
"source": "secure@microsoft.com",
"tags": [
"Vendor Advisory"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"US Government Resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"Press/Media Coverage",
"Vendor Advisory"
],
"url": "https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/"
}
],
"sourceIdentifier": "secure@microsoft.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "secure@microsoft.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T08:34:39+00:00",
"cve": "CVE-2025-49706",
"id": "CVE-2025-49706",
"initial_release_date": "2025-07-08T07:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Microsoft SharePoint Server Spoofing Vulnerability",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-49706.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-49706",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-07-23T03:55:23.189017Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2025-07-22",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-07-09T13:46:37.757Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/"
},
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706"
}
],
"timeline": [
{
"lang": "en",
"time": "2025-07-22T00:00:00.000Z",
"value": "CVE-2025-49706 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Enterprise Server 2016",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.5508.1000",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Server 2019",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.10417.20027",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SharePoint Server Subscription Edition",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.18526.20424",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*",
"versionEndExcluding": "16.0.5508.1000",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*",
"versionEndExcluding": "16.0.10417.20027",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*",
"versionEndExcluding": "16.0.18526.20424",
"versionStartIncluding": "16.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2025-07-08T07:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "CWE-287: Improper Authentication",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-13T19:07:42.100Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft SharePoint Server Spoofing Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706"
}
],
"title": "Microsoft SharePoint Server Spoofing Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2025-49706",
"datePublished": "2025-07-08T16:58:07.343Z",
"dateReserved": "2025-06-09T19:59:44.875Z",
"dateUpdated": "2026-08-04T03:55:53.894Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.