{"schemaVersion":3,"id":"CVE-2025-49706","aliases":[],"status":"published","duplicateOf":null,"title":"Microsoft SharePoint Improper Authentication Vulnerability","description":"Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.","dates":{"published":"2025-07-08T16:58:07.343Z","modified":"2026-08-04T03:55:53.894Z","reserved":null,"kevAdded":["2025-07-22T00:00:00.000Z"],"kevDue":["2025-07-23T00:00:00.000Z"]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.99095,"percentile":0.99933,"severity":"critical","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.031999999999998696,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.99063},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.99095,"percentile":0.99933}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.99063,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.99076,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.99095,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.99095,"percentile":0.99933}]},"kev":{"state":"listed","entries":[{"source":"cisa","sourceLabel":"CISA","dateAdded":"2025-07-22T00:00:00.000Z","dueDate":"2025-07-23T00:00:00.000Z","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.","name":"Microsoft SharePoint Improper Authentication Vulnerability","description":"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.","notes":[{"type":"text","value":"CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770"},{"type":"url","href":"https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/","label":"www.microsoft.com/en-us/…"},{"type":"url","href":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706","label":"msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706"},{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2025-49706","label":"nvd.nist.gov/vuln/detail/CVE-2025-49706"}],"vendor":"Microsoft","product":"SharePoint","ransomware":true,"ransomwareUse":"Known","exploitationType":null}],"listedCount":1,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":true,"entry":{"source":"cisa","sourceLabel":"CISA","dateAdded":"2025-07-22T00:00:00.000Z","dueDate":"2025-07-23T00:00:00.000Z","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.","name":"Microsoft SharePoint Improper Authentication Vulnerability","description":"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.","notes":[{"type":"text","value":"CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770"},{"type":"url","href":"https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/","label":"www.microsoft.com/en-us/…"},{"type":"url","href":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706","label":"msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706"},{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2025-49706","label":"nvd.nist.gov/vuln/detail/CVE-2025-49706"}],"vendor":"Microsoft","product":"SharePoint","ransomware":true,"ransomwareUse":"Known","exploitationType":null}},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"known","sources":["cisa"]},"exploits":[{"id":"MSF_EXPLOIT_WINDOWS_HTTP_SHAREPOINT_TOOLPANE_RCE","name":"Microsoft SharePoint Server ToolPane Unauthenticated Remote Code Execution (aka ToolShell)","source":"metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploit/windows/http/sharepoint_toolpane_rce.rb","maturity":"weaponized","reliabilityScore":1,"verified":true,"type":"remote","platforms":[],"requiresAuth":false,"exploitdb":null,"metasploit":{"fullname":"exploit/windows/http/sharepoint_toolpane_rce","rank":"600","rankName":"excellent","postAuth":false,"check":true,"stability":["crash-safe"],"sideEffects":["ioc-in-logs"],"reliability":["repeatable-session"]}}],"exploitCount":1,"weaknesses":[{"id":"CWE-287","name":"Improper Authentication","description":"When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/287.html"}],"affected":[{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2016","name":"Microsoft SharePoint Enterprise Server 2016","label":"microsoft sharepoint enterprise server 2016","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0, < 16.0.5508.1000","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0, < 16.0.5508.1000","eol":null,"hubHref":"/vendor/microsoft/microsoft_sharepoint_enterprise_server_2016"},{"vendor":"microsoft","product":"microsoft sharepoint server 2019","name":"Microsoft SharePoint Server 2019","label":"microsoft sharepoint server 2019","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0, < 16.0.10417.20027","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0, < 16.0.10417.20027","eol":null,"hubHref":"/vendor/microsoft/microsoft_sharepoint_server_2019"},{"vendor":"microsoft","product":"microsoft sharepoint server subscription edition","name":"Microsoft SharePoint Server Subscription Edition","label":"microsoft sharepoint server subscription edition","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0, < 16.0.18526.20424","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0, < 16.0.18526.20424","eol":null,"hubHref":"/vendor/microsoft/microsoft_sharepoint_server_subscription_edition"},{"vendor":"microsoft","product":"sharepoint_enterprise_server","name":"sharepoint enterprise server","label":"sharepoint_enterprise_server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2016","noFixRecorded":false,"fixedIn":null}],"versionsText":"2016","eol":null,"hubHref":"/vendor/microsoft/sharepoint_enterprise_server"},{"vendor":"microsoft","product":"sharepoint_server","name":"sharepoint server","label":"sharepoint_server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 16.0.18526.20424","noFixRecorded":false,"fixedIn":null},{"text":"2019","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 16.0.18526.20424 | 2019","eol":null,"hubHref":"/vendor/microsoft/sharepoint_server"}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706","label":"msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706","hostname":"msrc.microsoft.com","tags":["Vendor Advisory","Patch"]},{"url":"https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/","label":"www.microsoft.com/en-us/…","hostname":"www.microsoft.com","tags":["Vendor Advisory","Press/Media Coverage"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706","label":"www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706","hostname":"www.cisa.gov","tags":["Government Resource","US Government Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2025-07-08T16:58:07.343Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"kev-added","date":"2025-07-22T00:00:00.000Z","label":"Added to CISA KEV","detail":"Microsoft SharePoint Improper Authentication Vulnerability","source":"cisa"},{"kind":"kev-due","date":"2025-07-23T00:00:00.000Z","label":"CISA remediation due","detail":"Apply mitigations per vendor instructions.","source":"cisa"},{"kind":"modified","date":"2026-08-04T03:55:53.894Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":90,"level":"critical","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T19:13:52.001Z","stale":false,"partial":false}}