Microsoft Office SharePoint
CVE-2025-53771 — Microsoft SharePoint Server Spoofing Vulnerability
Executive Summary
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Overview
6.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS 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
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
Low
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.9
EPSS Score
0.99911
probability of exploitation in the next 30 days
0.99965 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
1 affected product
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft SharePoint Enterprise Server 2016 5002760 (Security Update) 5002759 (Security Update) Important Spoofing 5002743 Base: 6.5 Temporal: 5.9 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 16.0.5513.1001 Maybe None Microsoft SharePoint Server 2019 5002754 (Security Update) 5002753 (Security Update) Important Spoofing 5002739 Base: 6.5 Temporal: 5.9 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 16.0.10417.20037 Maybe None Microsoft SharePoint Server Subscription Edition | 5002768 (Security Update) |
Important | Spoofing | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
5002768 |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Anonymous, Viettel Cyber Security with Trend Zero Day Initiative
References
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