CVE-2025-53771

Microsoft SharePoint Server Spoofing Vulnerability

Basic Information

CVE State: PUBLISHED
Reserved Date: July 09, 2025
Published Date: July 20, 2025
Last Updated: February 13, 2026
Vendor: Microsoft
Product: Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Description: Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Tags

CVSS Scores

CVSS v3.1

6.5 - MEDIUM

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C

SSVC Information

Exploitation: none
Automatable: Yes
Technical Impact: partial

Exploit Status

Exploited in the Wild: Yes (2025-07-26 07:00:31 UTC) Source

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53771

Known Exploited Vulnerability Information

Source	Added Date
The Shadowserver (via CIRCL)	2025-07-26 07:00:31 UTC

Scanner Integrations

Scanner	URL	Date Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-53771.yaml	2026-06-01 15:34:42 UTC

Timeline

CVE ID Reserved

July 09, 2025
CVE Published to Public

July 20, 2025
Added to KEVIntel

July 26, 2025
Detected by Nuclei

June 01, 2026