{"api_version":"1","generated_at":"2026-08-18T00:01:54+00:00","cve":"CVE-2025-53770","urls":{"html":"https://cve.report/CVE-2025-53770","api":"https://cve.report/api/cve/CVE-2025-53770.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-53770","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-53770"},"summary":{"title":"Microsoft SharePoint Server Remote Code Execution Vulnerability","description":"Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.\nMicrosoft is aware that an exploit for CVE-2025-53770 exists in the wild.\nMicrosoft is preparing and fully testing a comprehensive update to address this vulnerability.  In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.","state":"PUBLISHED","assigner":"microsoft","published_at":"2025-07-20 01:15:30","updated_at":"2026-08-04 05:16:34"},"problem_types":["CWE-502","CWE-502 CWE-502: Deserialization of Untrusted Data"],"metrics":[{"version":"3.1","source":"secure@microsoft.com","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:W/RC:C","data":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:W/RC:C","version":"3.1"}}],"references":[{"url":"https://github.com/kaizensecurity/CVE-2025-53770","name":"https://github.com/kaizensecurity/CVE-2025-53770","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://x.com/Shadowserver/status/1946900837306868163","name":"https://x.com/Shadowserver/status/1946900837306868163","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53770","name":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53770","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["US Government Resource"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://news.ycombinator.com/item?id=44629710","name":"https://news.ycombinator.com/item?id=44629710","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770","name":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770","refsource":"secure@microsoft.com","tags":["Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://therecord.media/microsoft-sharepoint-zero-day-vulnerability-exploited-globally","name":"https://therecord.media/microsoft-sharepoint-zero-day-vulnerability-exploited-globally","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Press/Media Coverage"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770","name":"https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory","US Government Resource"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://arstechnica.com/security/2025/07/sharepoint-vulnerability-with-9-8-severity-rating-is-under-exploit-across-the-globe/","name":"https://arstechnica.com/security/2025/07/sharepoint-vulnerability-with-9-8-severity-rating-is-under-exploit-across-the-globe/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Press/Media Coverage"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://research.eye.security/sharepoint-under-siege/","name":"https://research.eye.security/sharepoint-under-siege/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mitigation","Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://msrc.microsoft.com/blog/2025/07/customer-guidance-for-sharepoint-vulnerability-cve-2025-53770/","name":"https://msrc.microsoft.com/blog/2025/07/customer-guidance-for-sharepoint-vulnerability-cve-2025-53770/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mitigation","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw","name":"https://www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Press/Media Coverage"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.forbes.com/sites/daveywinder/2025/07/20/microsoft-confirms-ongoing-mass-sharepoint-attack---no-patch-available/","name":"https://www.forbes.com/sites/daveywinder/2025/07/20/microsoft-confirms-ongoing-mass-sharepoint-attack---no-patch-available/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Press/Media Coverage"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/","name":"https://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Press/Media Coverage"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-53770","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53770","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2016","version":"affected 16.0.0 16.0.5513.1001 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Microsoft SharePoint Server 2019","version":"affected 16.0.0 16.0.10417.20037 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Microsoft SharePoint Server Subscription Edition","version":"affected 16.0.0 16.0.18526.20508 custom","platforms":["x64-based Systems"]}],"timeline":[{"source":"ADP","time":"2025-07-20T00:00:00.000Z","lang":"en","value":"CVE-2025-53770 added to CISA KEV"}],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2025","cve_id":"53770","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"microsoft","cpe5":"sharepoint_server","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"subscription","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2025","cve_id":"53770","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"microsoft","cpe5":"sharepoint_server","cpe6":"2016","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"enterprise","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2025","cve_id":"53770","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"microsoft","cpe5":"sharepoint_server","cpe6":"2019","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":{"cve_year":"2025","cve_id":"53770","cve":"CVE-2025-53770","vendorProject":"Microsoft","product":"SharePoint","vulnerabilityName":"Microsoft SharePoint Deserialization of Untrusted Data Vulnerability","dateAdded":"2025-07-20","shortDescription":"Microsoft SharePoint Server on-premises contains a deserialization of untrusted data vulnerability that could allow an unauthorized attacker to execute code over a network. This vulnerability could be chained with CVE-2025-53771. CVE-2025-53770 is a patch bypass for CVE-2025-49704, and the updates for CVE-2025-53770 include more robust protection than those for CVE-2025-49704.","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.","dueDate":"2025-07-21","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-2025-53770 ; https://nvd.nist.gov/vuln/detail/CVE-2025-53770","cwes":"CWE-502","catalogVersion":"2026.08.17","updated_at":"2026-08-17 14:39:22"},"epss":{"cve_year":"2025","cve_id":"53770","cve":"CVE-2025-53770","epss":"0.999820000","percentile":"0.999810000","score_date":"2026-08-16","updated_at":"2026-08-17 00:01:10"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"dateAdded":"2025-07-20","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53770"},"type":"kev"}},{"other":{"content":{"id":"CVE-2025-53770","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2025-07-20T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-08-04T03:55:52.588Z","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-2025-53770"}],"timeline":[{"lang":"en","time":"2025-07-20T00:00:00.000Z","value":"CVE-2025-53770 added to CISA KEV"}],"title":"CISA ADP Vulnrichment"},{"providerMetadata":{"dateUpdated":"2025-07-22T02:51:48.226Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"url":"https://msrc.microsoft.com/blog/2025/07/customer-guidance-for-sharepoint-vulnerability-cve-2025-53770/"},{"url":"https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770"},{"url":"https://research.eye.security/sharepoint-under-siege/"},{"url":"https://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/"},{"url":"https://www.forbes.com/sites/daveywinder/2025/07/20/microsoft-confirms-ongoing-mass-sharepoint-attack---no-patch-available/"},{"url":"https://x.com/Shadowserver/status/1946900837306868163"},{"url":"https://github.com/kaizensecurity/CVE-2025-53770"},{"url":"https://therecord.media/microsoft-sharepoint-zero-day-vulnerability-exploited-globally"},{"url":"https://news.ycombinator.com/item?id=44629710"},{"url":"https://arstechnica.com/security/2025/07/sharepoint-vulnerability-with-9-8-severity-rating-is-under-exploit-across-the-globe/"},{"url":"https://www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw"}],"title":"CVE Program Container","x_generator":{"engine":"ADPogram 0.0.1"}}],"cna":{"affected":[{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","vendor":"Microsoft","versions":[{"lessThan":"16.0.5513.1001","status":"affected","version":"16.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20037","status":"affected","version":"16.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server Subscription Edition","vendor":"Microsoft","versions":[{"lessThan":"16.0.18526.20508","status":"affected","version":"16.0.0","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*","versionEndExcluding":"16.0.5513.1001","versionStartIncluding":"16.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*","versionEndExcluding":"16.0.10417.20037","versionStartIncluding":"16.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*","versionEndExcluding":"16.0.18526.20508","versionStartIncluding":"16.0.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"datePublic":"2025-07-19T07:00:00.000Z","descriptions":[{"lang":"en-US","value":"Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.\nMicrosoft is aware that an exploit for CVE-2025-53770 exists in the wild.\nMicrosoft is preparing and fully testing a comprehensive update to address this vulnerability.  In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation."}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:W/RC:C","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-02-13T19:07:56.860Z","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft"},"references":[{"name":"Microsoft SharePoint Server Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770"}],"title":"Microsoft SharePoint Server Remote Code Execution Vulnerability"}},"cveMetadata":{"assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","assignerShortName":"microsoft","cveId":"CVE-2025-53770","datePublished":"2025-07-20T01:06:33.607Z","dateReserved":"2025-07-09T13:25:25.500Z","dateUpdated":"2026-08-04T03:55:52.588Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-07-20 01:15:30","lastModifiedDate":"2026-08-04 05:16:34","problem_types":["CWE-502","CWE-502 CWE-502: Deserialization of Untrusted Data"],"metrics":{"cvssMetricV31":[{"source":"secure@microsoft.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-07-20T00:00:00+00:00","id":"CVE-2025-53770","options":[{"exploitation":"active"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*","versionEndExcluding":"16.0.18526.20508","matchCriteriaId":"E1677A89-14A2-496E-A2EB-387B1BFE876C"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*","matchCriteriaId":"F815EF1D-7B60-47BE-9AC2-2548F99F10E4"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*","matchCriteriaId":"6122D014-5BF1-4AF4-8B4D-80205ED7785E"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"53770","Ordinal":"1","Title":"Microsoft SharePoint Server Remote Code Execution Vulnerability","CVE":"CVE-2025-53770","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"53770","Ordinal":"1","NoteData":"Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.\nMicrosoft is aware that an exploit for CVE-2025-53770 exists in the wild.\nMicrosoft is preparing and fully testing a comprehensive update to address this vulnerability.  In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.","Type":"Description","Title":"Microsoft SharePoint Server Remote Code Execution Vulnerability"}]}}}