MicrosoftRadarIndependent status for Microsoft services

Microsoft SharePoint Server Remote Code Execution Vulnerability

CVE-2025-53770 is a remote code execution vulnerability in Microsoft Office SharePoint (rated Critical, CVSS 9.8). Microsoft reports that it is being exploited.

Exploited1 version

Facts

Microsoft id
CVE-2025-53770
Status
Exploited
Products
Microsoft Office SharePoint
Severity
Critical
Impact
Remote Code Execution
CVSS
9.8
CVSS 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
Exploited
Yes
Publicly disclosed
No
Exploitability
Exploitation Detected
Customer action required
Yes
Release
2025-Jul
Assigned by
Microsoft
Weakness
CWE-502: Deserialization of Untrusted Data
MSRC revision
3.3
First captured by us
(from our first import of this list)
Microsoft last modified
Source
Security updates · open the original at Microsoft

Microsoft's revision notes

  1. Revision 1.0, 2025-07-19: Information published.
  2. Revision 1.1, 2025-07-19: Updated acknowledgment. This is an informational change only.
  3. Revision 2.0, 2025-07-20: The security update is available for Microsoft SharePoint Server Subscription Edition.
  4. Revision 3.0, 2025-07-20: The security update is available for Microsoft SharePoint Server 2019.
  5. Revision 3.1, 2025-07-21: Added an FAQ and updated the CVSS score. This is an informational change only.
  6. Revision 3.3, 2025-08-06: Acknowledgement added. This is an informational change only.

Microsoft says

Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.

Security updates,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    As first seen: Exploited
    Status
    Exploited

    Seen by us · Microsoft's timestamp · Microsoft's page

Mentioning the same Microsoft ids