Description
Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.
Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild.
Microsoft 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.
Published: 2025-07-20
Score: 9.8 Critical
EPSS: 100.0% High
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 13 Feb 2026 20:30:00 +0100

Type Values Removed Values Added
First Time appeared Microsoft sharepoint Server 2016
Microsoft sharepoint Server 2019
CPEs cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*
Vendors & Products Microsoft sharepoint Server 2016
Microsoft sharepoint Server 2019

Wed, 22 Oct 2025 01:15:00 +0200


Tue, 21 Oct 2025 22:30:00 +0200


Tue, 21 Oct 2025 21:30:00 +0200


Mon, 18 Aug 2025 19:15:00 +0200

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 22 Jul 2025 05:30:00 +0200


Tue, 22 Jul 2025 03:30:00 +0200

Type Values Removed Values Added
References

Mon, 21 Jul 2025 17:15:00 +0200

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft sharepoint Server
CPEs cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft sharepoint Server

Mon, 21 Jul 2025 16:30:00 +0200


Mon, 21 Jul 2025 02:30:00 +0200


Sun, 20 Jul 2025 22:00:00 +0200

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2025-07-20T00:00:00+00:00', 'dueDate': '2025-07-21T00:00:00+00:00'}


Sun, 20 Jul 2025 03:15:00 +0200

Type Values Removed Values Added
Description Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft 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.
Title Microsoft SharePoint Server Remote Code Execution Vulnerability
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 9.8, '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'}


Subscriptions

Microsoft Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-04T03:55:52.588Z

Reserved: 2025-07-09T13:25:25.500Z

Link: CVE-2025-53770

cve-icon Vulnrichment

Updated: 2025-07-22T02:51:48.226Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-20T01:15:30.777

Modified: 2026-08-04T05:16:34.887

Link: CVE-2025-53770

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses