Exploitation evidence
Known exploited · CISA KEV listed
Added 2025-07-22. Ransomware campaign use: Known.
CISA required action: 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.
CISA due date: 2025-07-23. 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
Microsoft / Microsoft SharePoint Enterprise Server 2016
Default status: Not specified
- affected: 16.0.0 to < 16.0.5508.1000 (custom)
Microsoft / Microsoft SharePoint Server 2019
Default status: Not specified
- affected: 16.0.0 to < 16.0.10417.20027 (custom)
Microsoft / Microsoft SharePoint Server Subscription Edition
Default status: Not specified
- affected: 16.0.0 to < 16.0.18526.20424 (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": 0.99863,
"percentile": 0.99962
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.99057,
"percentile": 0.99931
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.99057,
"percentile": 0.99931
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.99057,
"percentile": 0.99931
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.99057,
"percentile": 0.99931
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.99057,
"percentile": 0.99931
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.99057,
"percentile": 0.99931
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.99057,
"percentile": 0.99931
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.99057,
"percentile": 0.99932
}03 Nov 2026, 18:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-49706",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
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"role": "CISA Coordinator",
"timestamp": "2025-07-22T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
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},
{
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"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706"
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"url": "https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/"
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{
"tags": [
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"time": "2025-07-22T00:00:00.000Z",
"value": "CVE-2025-49706 added to CISA KEV"
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"title": "CISA ADP Vulnrichment"
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"cna": {
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{
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],
"product": "Microsoft SharePoint Enterprise Server 2016",
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"cpeApplicability": [
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"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": [
{
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"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",
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"problemTypes": [
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{
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],
"providerMetadata": {
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"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
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"references": [
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"tags": [
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706"
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"title": "Microsoft SharePoint Server Spoofing Vulnerability"
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},
"cveMetadata": {
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"datePublished": "2025-07-08T16:58:07.343Z",
"dateReserved": "2025-06-09T19:59:44.875Z",
"dateUpdated": "2026-08-04T03:55:53.894Z",
"state": "PUBLISHED"
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}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.99057,
"percentile": 0.99932
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"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"
}