Microsoft Office SharePoint
CVE-2025-21393 — Microsoft SharePoint Server Spoofing Vulnerability
Executive Summary
None
Overview
6.3
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:L/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
Low
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.5
EPSS Score
0.01041
probability of exploitation in the next 30 days
0.59523 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 5002672 (Security Update) 5002671 (Security Update) Important Spoofing 5002659 5002544 Base: 6.3 Temporal: 5.5 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C 16.0.5483.1001 Maybe None Microsoft SharePoint Server 2019 5002666 (Security Update) 5002667 (Security Update) Important Spoofing 5002657 5002664 Base: 6.3 Temporal: 5.5 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C 16.0.10416.20041 Maybe None Microsoft SharePoint Server Subscription Edition | 5002676 (Security Update) |
Important | Spoofing | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
5002676 |
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
Felix Boulet
References
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