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Medium severity6.5NVD Advisory· Published Jul 20, 2025· Updated Jun 17, 2026

CVE-2025-53771

CVE-2025-53771

Description

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

5

Microsoft/Sharepoint Serverllm-create3 versions
(expand)+ 2 more
- (no CPE)
- (no CPE)range: 16.0.0
- (no CPE)range: 16.0.0
Microsoft/Office SharePointllm-fuzzy2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: 16.0.0

Patches

Vulnerability mechanics

References

2

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53771nvdVendor Advisory
www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/nvdPress/Media Coverage

News mentions

1

Ransomware Tactics, Techniques, and Procedures in a Shifting Threat Landscape
Mandiant Threat Intelligence · Mar 16, 2026